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soil working in agriculture or forestry

3

A01B

planting

1

A01C

harvesting

3

A01D

processing of harvested produce

1

A01F

horticulture

3

A01G

new plants or processes for obtaining them

1

A01H

manufacture of dairy products

1

A01J

animal husbandry

2

A01K

shoeing of animals

1

A01L

catching or trapping of animals

3

A01M

preservation of bodies of humans or animals or plants or parts thereof

2

A01N

"bakers' ovens"

1

A21B

machines or equipment for making or processing doughs

1

A21C

"treatment, e.g. preservation, of flour or dough, e.g. by addition of material"

1

A21D

slaughtering

1

A22B

"processing meat, poultry, or fish"

1

A22C

"preserving, e.g. by canning, meat, fish, eggs, fruit, vegetables, edible seed"

1

A23B

"dairy products, e.g. milk, butter, cheese"

1

A23C

A23D

1

A23D

coffee

1

A23F

cocoa

3

A23G

protein compositions for foodstuffs

1

A23J

fodder

1

A23K

"foods, foodstuffs, or non-alcoholic beverages, not covered by subclasses a23b"

2

A23L

A23N

1

A23N

"shaping or working of foodstuffs, not fully covered by a single"

1

A23P

"indexing scheme relating to foods, foodstuffs or non-alcoholic beverages"

1

A23V

indexing scheme relating to lactic or propionic acid bacteria used in foodstu

1

A23Y

manufacture or preparation of tobacco for smoking or chewing

1

A24B

machines for making cigars or cigarettes

1

A24C

cigars

1

A24D

"smokers' requisites"

1

A24F

shirts

1

A41B

A41C

1

A41C

outerwear

2

A41D

garment fastenings

1

A41F

artificial flowers

1

A41G

"appliances or methods for making clothes, e.g. for dress-making,"

1

A41H

hats

3

A42B

A42C

1

A42C

characteristic features of footwear

2

A43B

fastenings or attachments of footwear

1

A43C

"machines, tools, equipment or methods for manufacturing or repairing footwear"

1

A43D

"buttons, pins, buckles, slide fasteners, or the like"

2

A44B

jewellery

1

A44C

"indexing scheme relating to buttons, pins, buckles or slide fasteners, and to"

1

A44D

walking sticks

1

A45B

purses

3

A45C

hairdressing or shaving equipment

3

A45D

travelling or camp equipment

3

A45F

brushes

3

A46B

manufacture of brushes

1

A46D

tables

2

A47B

chairs

2

A47C

furniture specially adapted for children

1

A47D

"special furniture, fittings, or accessories for shops, storehouses, bars, res"

2

A47F

household or table equipment

2

A47G

furnishings for windows or doors

1

A47H

kitchen equipment

3

A47J

sanitary equipment not otherwise provided for

3

A47K

domestic washing or cleaning

2

A47L

diagnosis

2

A61B

dentistry

2

A61C

"veterinary instruments, implements, tools, or methods"

1

A61D

filters implantable into blood vessels

2

A61F

transport or accomodation for patients

2

A61G

"physical therapy apparatus, e.g. devices for locating or stimulating reflex p"

2

A61H

containers specially adapted for medical or pharmaceutical purposes

2

A61J

"preparations for medical, dental, or toilet purposes"

2

A61K

methods or apparatus for sterilising materials or objects in general

2

A61L

"devices for introducing media into, or onto, the body"

2

A61M

electrotherapy

2

A61N

specific use of cosmetics or similar toilet preparations

2

A61Q

"devices, apparatus or methods for life-saving"

3

A62B

fire-fighting

3

A62C

chemical means for extinguishing fires or for combating or protecting against

1

A62D

"apparatus for physical training, gymnastics, swimming, climbing,"

2

A63B

skates

3

A63C

bowling-alleys

1

A63D

"card, board, or roulette games"

2

A63F

merry-go-rounds

1

A63G

"toys, e.g. tops, dolls, hoops, building blocks"

2

A63H

"devices for theatres, circuses, or the like"

1

A63J

racing

1

A63K

boiling

1

B01B

separation

2

B01D

"mixing, e.g. dissolving, emulsifying, dispersing"

2

B01F

"chemical or physical processes, e.g. catalysis, colloid chemistry"

2

B01J

chemical or physical laboratory apparatus for general use

2

B01L

preparing grain for milling

1

B02B

"crushing, pulverising, or disintegrating in general"

3

B02C

separating solid materials using liquids or using pneumatic

1

B03B

magnetic or electrostatic separation of solid materials from solid materials

3

B03C

flotation

1

B03D

centrifuges

3

B04B

"apparatus using free vortex flow, e.g. cyclones"

1

B04C

spraying apparatus

2

B05B

apparatus for applying liquids or other fluent materials to

2

B05C

processes for applying liquids or other fluent materials to

2

B05D

methods or apparatus for generating or transmitting mechanical vibrations of

3

B06B

"seperating solids from solids by sieving, screening, or sifting or by using g"

1

B07B

postal sorting

2

B07C

cleaning in general

2

B08B

disposal of solid waste

3

B09B

reclamation of contaminated soil

3

B09C

rolling of metal

1

B21B

"manufacture of metal sheets, wire, rods, tubes or profiles, otherwise than by"

3

B21C

"working or processing of sheet metal or metal tubes, rods or profiles without"

2

B21D

working or processing of metal wire

1

B21F

"making needles, pins or nails of metal"

1

B21G

"making particular metal objects by rolling, e.g. screws, wheels,"

1

B21H

forging

3

B21J

"making forged or pressed metal products, e.g. horse-shoes, rivets,"

1

B21K

making metal chains

1

B21L

foundry moulding

1

B22C

casting of metals

3

B22D

working metallic powder

2

B22F

turning

2

B23B

milling

3

B23C

planing

2

B23D

making gears or toothed racks

1

B23F

thread cutting

1

B23G

working of metal by the action of a high concentration of electric current on

1

B23H

soldering or unsoldering

2

B23K

other working of metal

2

B23P

"details, components, or accessories for machine tools, e.g."

2

B23Q

"machines, devices, or processes for grinding or polishing"

2

B24B

abrasive or related blasting with particulate material

1

B24C

"tools for grinding, buffing, or sharpening"

3

B24D

"tools or bench devices not otherwise provided for, for fastening, connecting,"

2

B25B

hand-held nailing or stapling tools

1

B25C

percussive tools

1

B25D

combination or multi-purpose tools not otherwise provided for

3

B25F

handles for hand implements

3

B25G

"workshop equipment, e.g. for marking-out work"

3

B25H

manipulators

2

B25J

hand-held cutting tools not otherwise provided for

3

B26B

cutting

2

B26D

perforating

3

B26F

saws for wood or similar material

3

B27B

"planing, drilling, milling, turning or universal machines for"

1

B27C

working veneer or plywood

1

B27D

dovetailed work

1

B27F

accessory machines or apparatus

3

B27G

bending wood or similar material

1

B27H

"mechanical working of cane, cork, or similar materials"

1

B27J

"processes, apparatus or selection of substances for impregnating, staining, d"

1

B27K

removing bark or vestiges of branches

1

B27L

working of wood not provided for in subclasses b27b - b27l

1

B27M

"manufacture by dry processes of articles, with or without organic binding age"

3

B27N

"shaping clay or other ceramic compositions, slag, or mixtures containing ceme"

3

B28B

preparing clay

1

B28C

working stone or stone-like materials

3

B28D

preparation or pretreatment of the material to be shaped

2

B29B

shaping or joining of plastics

2

B29C

producing particular articles from plastics or from substances

2

B29D

"indexing scheme associated with subclasses b29b, b29c or b29d, relating to mo"

2

B29K

"indexing scheme associated with subclass b29c, relating to particular article"

2

B29L

presses in general

3

B30B

"making boxes, cartons, envelopes or bags of paper or cardboard"

3

B31B

"making wound articles, e.g. wound tubes, of paper or cardboard"

1

B31C

making articles of paper or cardboard not provided for in

3

B31D

mechanical working or deformation of paper or cardboard

3

B31F

"layered products, i.e. products built-up of strata of flat or non- flat, e.g."

2

B32B

"additive manufacturing, i.e. manufacturing of three-dimensional [3-d] objects"

1

B33Y

"machines or accessories for making, setting, or distributing type"

1

B41B

processes for the manufacture or reproduction of printing

1

B41C

apparatus for the mechanical reproduction of printing surfaces for stereotype

1

B41D

printing machines or presses

3

B41F

"apparatus for bronze printing, line printing, or for bordering or edging shee"

1

B41G

typewriters

2

B41J

stamps

1

B41K

"apparatus or devices for manifolding, duplicating, or printing for office or "

1

B41L

"printing, duplicating, marking, or copying processes"

2

B41M

printing plates or foils

1

B41N

"indexing scheme relating to printing, lining machines, typewriters, and to st"

1

B41P

"permanently attaching together sheets, quires or signatures"

1

B42B

bookbinding

1

B42C

books

2

B42D

sheets temporarily attached together

1

B42F

"indexing scheme relating to books, filing appliances or the like"

1

B42P

implements for writing or drawing

1

B43K

articles for writing or drawing upon

1

B43L

bureau accessories not otherwise provided for

1

B43M

"machines, apparatus or tools for artistic work, e.g. for sculpturing, guilloc"

1

B44B

producing decorative effects

2

B44C

"painting or artistic drawing, not otherwise provided for"

1

B44D

special designs or pictures

3

B44F

vehicle wheels

3

B60B

vehicle tyres

2

B60C

vehicle connections

1

B60D

vehicles for use both on rail and on road

1

B60F

vehicle suspension arrangements

3

B60G

"arrangements or adaptations of heating, cooling, ventilating, or other air-tr"

3

B60H

"windows, windscreens, non-fixed roofs, doors, or similar devices for vehicles"

2

B60J

arrangement or mounting of propulsion units or of transmissions in vehicles

2

B60K

electric equipment or propulsion of electrically-propelled vehicles

2

B60L

"power supply lines, and devices along rails, for electrically-"

1

B60M

vehicle passenger accommodation not otherwise provided for

2

B60N

"vehicles adapted for load transportation or to transport,"

3

B60P

vehicle lighting or signalling

2

B60Q

"vehicles, vehicle fittings, or vehicle parts, not otherwise provided for"

2

B60R

"servicing, cleaning, repairing, supporting, lifting, or manoeuvring of vehicl"

3

B60S

vehicle brake control systems or parts thereof

2

B60T

air-cushion vehicles

1

B60V

conjoint control of vehicle sub-units of different type or different function

2

B60W

indexing scheme relating to aspects cross-cutting vehicle technology

3

B60Y

railway systems

1

B61B

locomotives

1

B61C

body details or kinds of railway vehicles

1

B61D

"rail vehicle suspensions, e.g. underframes, bogies or arrangements of wheel a"

1

B61F

couplings

1

B61G

brakes or other retarding apparatus peculiar to rail vehicles

1

B61H

shifting or shunting of rail vehicles

1

B61J

other auxiliary equipment for railways

1

B61K

guiding railway traffic

1

B61L

"hand-propelled vehicles, e.g. hand carts, perambulators"

3

B62B

vehicles drawn by animals

1

B62C

motor vehicles

2

B62D

cycle stands

1

B62H

cycle saddles or seats

3

B62J

cycles

3

B62K

brakes specially adapted for cycles

1

B62L

rider propulsion of wheeled vehicles or sledges

3

B62M

ships or other waterborne vessels

3

B63B

"launching, hauling-out, or dry-docking of vessels"

1

B63C

offensive or defensive arrangements on vessels

1

B63G

marine propulsion or steering

3

B63H

auxiliaries on vessels

1

B63J

lighter-than air aircraft

1

B64B

aeroplanes

2

B64C

equipment for fitting in or to aircraft

2

B64D

ground or aircraft-carrier-deck installations specially adapted for use in co

1

B64F

cosmonautics

3

B64G

"machines, apparatus or devices for, or methods of, packaging"

2

B65B

"labelling or tagging machines, apparatus, or processes"

3

B65C

"containers for storage or transport of articles or materials,"

2

B65D

gathering or removal of domestic or like refuse

3

B65F

"transport or storage devices, e.g. conveyors for loading or tipping"

2

B65G

"handling thin or filamentary material, e.g. sheets, webs, cables"

2

B65H

elevators

1

B66B

cranes

3

B66C

capstans

1

B66D

"hoisting, lifting, hauling or pushing, not otherwise provided for,"

3

B66F

"applying closure members to bottles jars, or similar containers"

1

B67B

"cleaning, filling with liquids or semiliquids, or emptying, of bottles, jars,"

1

B67C

"dispensing, delivering or transferring liquids, not otherwise"

3

B67D

harness

1

B68B

B68C

1

B68C

"making articles from leather, canvas, or the like"

1

B68F

"methods, equipment, or machines for use in upholstering"

1

B68G

"micro-structural devices or systems, e.g. micro-mechanical"

2

B81B

processes or apparatus specially adapted for the manufacture or treatment of

2

B81C

"nano-structures formed by manipulation of individual atoms, molecules, or lim"

1

B82B

specific uses or applications of nano-structures

2

B82Y

non-metallic elements

2

C01B

ammonia

1

C01C

"compounds of alkali metals, i.e. lithium, sodium, potassium,"

1

C01D

"compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, "

3

C01F

C01G

2

C01G

indexing scheme relating to structural and physical aspects of solid inorgani

2

C01P

"treatment of water, waste water, sewage, or sludge"

2

C02F

"manufacture, shaping, or supplementary processes"

3

C03B

"chemical composition of glasses, glazes, or vitreous enamels"

2

C03C

"lime, magnesia"

2

C04B

phosphatic fertilisers

1

C05B

nitrogenous fertilisers

1

C05C

"inorganic fertilisers not covered by subclasses c05b, c05c"

1

C05D

"organic fertilisers not covered by subclasses c05b, c05c, e.g."

1

C05F

mixtures of fertilisers covered individually by different subclasses of class

1

C05G

explosives or thermic compositions

1

C06B

detonating or priming devices

1

C06C

means for generating smoke or mist

1

C06D

matches

1

C06F

general methods of organic chemistry

2

C07B

acyclic or carbocyclic compounds

2

C07C

heterocyclic compounds

2

C07D

"acyclic, carbocyclic or heterocyclic compounds containing elements other than"

2

C07F

compounds of unknown constitution

1

C07G

sugars

2

C07H

steroids

1

C07J

peptides

2

C07K

C08B

2

C08B

treatment or chemical modification of rubbers

1

C08C

macromolecular compounds obtained by reactions only involving carbon-to-carbo

2

C08F

macromolecular compounds obtained otherwise than by reactions only involving

2

C08G

derivatives of natural macromolecular compounds

1

C08H

working-up

2

C08J

use of inorganic or non-macromolecular organic substances as

2

C08K

compositions of macromolecular compounds

2

C08L

organic dyes or closely-related compounds for producing dyes

2

C09B

"treatment of inorganic materials, other than fibrous fillers,"

2

C09C

"coating compositions, e.g. paints, varnishes or lacquers"

2

C09D

natural resins

1

C09F

polishing compositions other than french polish

1

C09G

C09H

1

C09H

adhesives

2

C09J

"materials for miscellaneous applications, not provided for elsewhere"

2

C09K

"destructive distillation of carbonageous materials for production of gas, cok"

1

C10B

"working-up pitch, asphalt, bitumen, tar"

1

C10C

drying or working-up of peat

1

C10F

cracking hydrocarbon oils

2

C10G

production of acetylene by wet methods

1

C10H

"production of producer gas, water-gas, synthesis gas from solid carbonaceous "

3

C10J

purifying or modifying the chemical composition of combustible gases containi

1

C10K

C10L

3

C10L

lubricating compositions

3

C10M

indexing scheme associated with subclass c10m relating to lubricating composi

3

C10N

C11B

1

C11B

"fatty acids from fats, oils or waxes"

1

C11C

detergent compositions

2

C11D

C12C

1

C12C

distillation or rectification of fermented solutions

1

C12F

wine

1

C12G

pasteurisation

1

C12H

vinegar

1

C12J

pitching or depitching machines

1

C12L

apparatus for enzymology or microbiology

2

C12M

C12N

2

C12N

fermentation or enzyme-using processes to synthesise a desired chemical compo

2

C12P

measuring or testing processes involving enzymes or micro- organisms

2

C12Q

processes using micro-organisms

1

C12R

enzymes

2

C12Y

production of sucrose

1

C13B

"saccharides, other than sucrose, obtained from natural sources or by hydrolys"

1

C13K

"mechanical treatment or processing of skins, hides or leather in general"

1

C14B

"chemical treatment of hides, skins or leather, e.g. tanning, impregnating, fi"

1

C14C

C21B

1

C21B

"processing of pig-iron, e.g. refining, manufacture of wrought- iron or steel"

1

C21C

modifying the physical structure of ferrous metals

3

C21D

production and refining of metals

3

C22B

alloys

2

C22C

changing the physical structure of non-ferrous metals and non-

3

C22F

coating metallic material

2

C23C

C23D

1

C23D

non-mechanical removal of metallic material from surface

3

C23F

cleaning or degreasing of metallic material by chemical

1

C23G

electrolytic or electrophoretic processes for the production of compounds or

3

C25B

"processes for the electrolytic production, recovery or refining of metals"

1

C25C

processes for the electrolytic or electrophoretic production

2

C25D

processes for the electrolytic removal of materials from objects

1

C25F

single-crystal-growth

2

C30B

combinatorial chemistry

2

C40B

mechanical treatment of natural fibrous or filamentary material to obtain fib

1

D01B

chemical treatment of natural filamentary or fibrous material to obtain filam

1

D01C

"mechanical methods or apparatus in the manufacture of artificial filaments, t"

3

D01D

"chemical features in the manufacture of artificial filaments, threads, fibres"

2

D01F

"preliminary treatment of fibres, e.g. for spinning"

1

D01G

spinning or twisting

1

D01H

"crimping or curling fibres, filaments, threads, or yarns"

3

D02G

"warping, beaming or leasing"

1

D02H

"finishing or dressing of filaments, yarns, threads, cords, ropes"

1

D02J

shedding mechanisms

1

D03C

woven fabrics

3

D03D

auxiliary weaving apparatus

1

D03J

knitting

3

D04B

"braiding or manufacture of lace, including bobbin-net or carbonised lace"

1

D04C

trimmings

1

D04D

making nets by knotting of filamentary material

1

D04G

"making textile fabrics, e.g. from fibres or filamentary material"

2

D04H

sewing

1

D05B

embroidering

1

D05C

"indexing scheme associated with subclasses d05b and d05c, relating to sewing,"

1

D05D

"treating textile materials by liquids, gases or vapours"

1

D06B

"finishing, dressing, tentering or stretching textile fabrics"

1

D06C

"laundering, drying, ironing, pressing or folding textile articles"

3

D06F

"mechanical or pressure cleaning of carpets, rugs, sacks, hides or other skin "

1

D06G

"marking, inspecting, seaming or severing textile materials"

1

D06H

"pleating, kilting, or goffering textile fabrics or wearing"

1

D06J

"bleaching, e.g. optical bleaching, dry-cleaning or washing fibres, threads, y"

1

D06L

"treatment, not provided for elsewhere in class d06, of fibres, threads, yarns"

2

D06M

"wall, floor or like covering materials, e.g. linoleum, oilcloth, artificial l"

3

D06N

dyeing or printing textiles

3

D06P

D06Q

1

D06Q

ropes or cables in general

1

D07B

"indexing scheme associated with sublasses of section d, relating to textiles"

3

D10B

fibrous raw materials or their mechanical treatment

1

D21B

production of cellulose by removing non-cellulose substances from cellulose-c

3

D21C

treatment of the materials before passing to the paper-making machine

1

D21D

paper-making machines

3

D21F

D21G

1

D21G

pulp compositions

2

D21H

fibreboard

1

D21J

permanent way

1

E01B

"construction of, or surfaces for, roads, sports grounds, or the like"

3

E01C

"construction of bridges,"

1

E01D

"additional work, such as equipping roads or the construction of platforms, he"

3

E01F

street cleaning

1

E01H

hydraulic engineering

3

E02B

ship-lifting devices or mechanisms

1

E02C

foundations

3

E02D

dredging

3

E02F

"installations or methods for obtaining, collecting, or"

1

E03B

domestic plumbing installations for fresh water or waste

3

E03C

water-closets or urinals with flushing devices

1

E03D

sewers

3

E03F

general building constructions

2

E04B

structural elements

2

E04C

roof coverings

3

E04D

"finishing work on buildings, e.g. stairs, floors"

2

E04F

scaffolding

3

E04G

buildings or like structures for particular purposes

3

E04H

locks

2

E05B

"bolts or fastening devices for wings, specially for doors"

2

E05C

"hinges or other suspension devices for doors, windows or wings"

2

E05D

devices for moving wings into open or closed position

2

E05F

safes or strong-rooms for valuables

1

E05G

"indexing scheme relating to hinges or other suspension devices for doors, win"

2

E05Y

"fixed or movable closures for openings in buildings, vehicles, fences or like"

2

E06B

ladders

1

E06C

"earth drilling, e.g. deep drilling"

2

E21B

mining or quarrying

1

E21C

shafts

1

E21D

"safety devices, transport, filling-up, rescue, ventilation, or draining in or"

1

E21F

"machines or engines, in general or of positive-displacement"

1

F01B

rotary-piston or oscillating-piston machines or engines

1

F01C

"non-positive displacement machines or engines, e.g. steam"

2

F01D

steam engine plants

3

F01K

F01L

3

F01L

lubricating of machines or engines in general

3

F01M

gas-flow silencers or exhaust apparatus for machines or engines in general

2

F01N

cooling of machines or engines in general

3

F01P

internal-combustion piston engines

2

F02B

gas-turbine plants

3

F02C

controlling combustion engines

2

F02D

"cylinders, pistons or casings, for combustion engines"

3

F02F

hot gas or combustion-product positive-displacement engine

3

F02G

jet-propulsion plants

3

F02K

"supplying combustion engines in general, with combustible"

2

F02M

starting of combustion engines

3

F02N

"ignition, other than compression ignition, for internal- combustion engines"

3

F02P

machines or engines for liquids

3

F03B

positive-displacement engines driven by liquids

1

F03C

wind motors

3

F03D

"spring, weight, inertia or like motors"

3

F03G

"producing a reactive propulsive thrust, not otherwise provided"

1

F03H

positive displacement machines for liquids

2

F04B

"rotary-piston, or oscillating-piston, positive-displacement machines for liqu"

3

F04C

non-positive displacement pumps

2

F04D

pumping of fluid by direct contact of another fluid or by using

1

F04F

indexing scheme relating to machines or engines other than non-positive-displ

3

F05B

"indexing scheme relating to materials, material properties or material charac"

3

F05C

indexing scheme for aspects relating to non-positive- displacement machines o

3

F05D

systems acting by means of fluids in general

3

F15B

fluid-circuit elements predominantly used for computing or

3

F15C

"fluid dynamics, i.e. methods or means for influencing the flow of"

1

F15D

devices for fastening or securing constructional elements or machine parts to

2

F16B

shafts

2

F16C

couplings for transmitting rotation

2

F16D

springs

2

F16F

"belts, cables, or ropes, predominantly used for driving purposes"

3

F16G

gearing

2

F16H

pistons

3

F16J

valves

2

F16K

pipes

2

F16L

"frames, casings, or beds of engines or other machines or apparatus not specif"

2

F16M

lubricating

1

F16N

safety devices in general

1

F16P

constructional elements in general

1

F16S

steam traps or like apparatus for draining-off liquids from enclosures predom

1

F16T

F17B

1

F17B

"vessels for containing or storing compressed, liquefied or solidified gases"

3

F17C

pipe-line systems

1

F17D

mantles

1

F21H

light sources not otherwise provided for

2

F21K

"lighting devices or systems thereof, being portable or specially adapted for "

3

F21L

non-portable lighting devices or systems thereof

2

F21S

"details of lighting devices, of general application"

2

F21V

"indexing scheme associated with subclasses f21k, f21l, f21s and f21v, relatin"

2

F21W

"indexing scheme associated with subclasses f21k, f21l, f21s and f21v, relatin"

2

F21Y

methods of steam generation

1

F22B

"preheating, or accumulating preheated, feed-water"

1

F22D

F22G

1

F22G

methods or apparatus for combustion using only solid fuel

1

F23B

combustion apparatus using fluent fuel

3

F23C

burners

3

F23D

cremation furnaces

3

F23G

grates

1

F23H

removal or treatment of combustion products or combustion

1

F23J

feeding fuel to combustion apparatus

1

F23K

air supply

1

F23L

"casings, linings, walls or doors specially adapted for combustion chambers, e"

1

F23M

regulating or controlling combustion

3

F23N

ignition

1

F23Q

generating combustion products of high pressure or high

3

F23R

domestic stoves or ranges for solid fuels

1

F24B

other domestic stoves or ranges

3

F24C

"domestic- or space-heating systems, e.g. central heating systems"

3

F24D

"air-conditioning, air-humidification, ventilation, use of air"

2

F24F

"fluid heaters, e.g. water or air heaters, having heat generating"

3

F24H

producing or use of heat not otherwise provided for

2

F24J

"refrigeration machines, plants or systems"

2

F25B

"production, working, storing or distribution of ice"

1

F25C

refrigerators

2

F25D

"liquefaction, solidification or separation of gases or gaseous"

3

F25J

drying solid materials or objects by removing liquid therefrom

3

F26B

"furnaces, kilns, ovens, or retorts in general"

3

F27B

"details or accessories of furnaces, kilns, ovens, or retorts, in so far as th"

3

F27D

"indexing scheme relating to aspects of the charges or furnaces, kilns, ovens "

1

F27M

steam or vapour condensers

1

F28B

"heat-exchange apparatus, not provided for in another subclass, in which the h"

1

F28C

"heat-exchange apparatus, not provided for in another subclass, in which the h"

2

F28D

"details of heat-exchange and heat-transfer apparatus, of"

2

F28F

cleaning of internal or external surfaces of heat-exchange or heat-transfer c

1

F28G

"functional features or details common to both smallarms and ordnance, e.g. ca"

1

F41A

weapons for projecting missiles without use of explosive or combustible prope

1

F41B

"smallarms, e.g. pistols, rifles"

1

F41C

"apparatus for launching projectiles or missiles from barrels,"

1

F41F

weapon sights

3

F41G

armour

3

F41H

targets

1

F41J

"explosive charges, e.g. for blasting, fireworks, ammunition"

3

F42B

F42C

1

F42C

F42D

1

F42D

"measuring length, thickness or similar linear dimensions"

2

G01B

"measuring distances, levels or bearings"

2

G01C

measuring not specially adapted for a specific variable

2

G01D

"measuring volume, volume flow, mass flow or liquid level"

2

G01F

weighing

3

G01G

"measurement of mechanical vibrations or ultrasonic, sonic"

3

G01H

"measurement of intensity, velocity, spectral content, polarisation, phase or "

2

G01J

measuring temperature

2

G01K

"measuring force, stress, torque, work, mechanical power,"

2

G01L

testing static or dynamic balance of machines or structures

2

G01M

investigating or analysing materials by determining their

2

G01N

"measuring linear or angular speed, acceleration, deceleration, or shock"

2

G01P

scanning-probe techniques or apparatus

2

G01Q

measuring electric variables

2

G01R

radio direction-finding

2

G01S

G01T

2

G01T

geophysics

2

G01V

meteorology

1

G01W

"optical elements, systems, or apparatus"

2

G02B

spectacles

2

G02C

"devices or arrangements, the optical operation of which is modified by changi"

2

G02F

apparatus or arrangements for taking photographs or for projecting or viewing

2

G03B

photosensitive materials for photographic purposes

2

G03C

apparatus for processing exposed photographic materials

1

G03D

"photomechanical production of textured or patterned surfaces, e.g. for printi"

2

G03F

G03G

2

G03G

holographic processes or apparatus

2

G03H

mechanically-driven clocks or watches

1

G04B

electromechanical clocks or watches

1

G04C

apparatus or tools specially designed for making or maintaining clocks or wat

1

G04D

time-interval measuring

1

G04F

electronic time-pieces

2

G04G

radio-controlled time-pieces

1

G04R

control or regulating systems in general

2

G05B

systems for controlling or regulating non-electric variables

2

G05D

systems for regulating electric or magnetic variables

2

G05F

control devices or systems insofar as characterised by

2

G05G

digital computers in which all the computation is effected

1

G06C

optical computing devices

1

G06E

electrical digital data processing

2

G06F

analogue computers

1

G06G

hybrid computing arrangements

1

G06J

recognition of data

2

G06K

counting mechanisms

1

G06M

computer systems based on specific computational models

2

G06N

"data processing systems or methods, specially adapted for administrative, com"

2

G06Q

"image data processing or generation, in general"

2

G06T

ticket-issuing apparatus

2

G07B

time or attendance registers

2

G07C

"handling of coins or of paper currency or similar valuable papers, e.g. testi"

2

G07D

coin-freed or like apparatus

2

G07F

G07G

2

G07G

signalling or calling systems

2

G08B

"transmission systems for measured values, control or similar"

2

G08C

G08G

2

G08G

educational or demonstration appliances

2

G09B

coding or ciphering apparatus for cryptographic or other