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A
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SECTION A — HUMAN NECESSITIES
B
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SECTION B — PERFORMING OPERATIONSTRANSPORTING
C
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SECTION C — CHEMISTRYMETALLURGY
D
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SECTION D — TEXTILESPAPER
E
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SECTION E — FIXED CONSTRUCTIONS
F
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SECTION F — MECHANICAL ENGINEERINGLIGHTINGHEATINGWEAPONSBLASTING
F01
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ENGINES OR PUMPS
F01
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MACHINES OR ENGINES IN GENERALENGINE PLANTS IN GENERALSTEAM ENGINES
F02
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COMBUSTION ENGINESHOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F03
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MACHINES OR ENGINES FOR LIQUIDSWIND, SPRING, OR WEIGHT MOTORSPRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
F04
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POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDSPUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F15
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ENGINEERING IN GENERAL
F15
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FLUID-PRESSURE ACTUATORSHYDRAULICS OR PNEUMATICS IN GENERAL
F16
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ENGINEERING ELEMENTS OR UNITSGENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONSTHERMAL INSULATION IN GENERAL
F17
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STORING OR DISTRIBUTING GASES OR LIQUIDS
F21
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LIGHTINGHEATING
F21
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LIGHTING
F22
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STEAM GENERATION
F23
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COMBUSTION APPARATUSCOMBUSTION PROCESSES
F24
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HEATINGRANGESVENTILATING
F25
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REFRIGERATION OR COOLINGCOMBINED HEATING AND REFRIGERATION SYSTEMSHEAT PUMP SYSTEMSMANUFACTURE OR STORAGE OF ICELIQUEFACTION OR SOLIDIFICATION OF GASES
F26
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DRYING
F27
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FURNACESKILNSOVENSRETORTS [4]
F27B
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FURNACES, KILNS, OVENS, OR RETORTS IN GENERALOPEN SINTERING OR LIKE APPARATUS (combustion apparatus F23; electric heating H05B)
F27D
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DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE (combustion apparatus F23; electric heating H05B)
F27D 1/00
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CasingsLiningsWallsRoofs (refractory materials C04B; firebridges for combustion chambers F23M 3/00)
F27D 1/02
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CrownsRoofs
F27D 1/04
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characterised by the form of the bricks or blocks used
F27D 1/06
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. . Composite bricks or blocks
F27D 1/08
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. . . Bricks or blocks with internal reinforcement or metal backing
F27D 1/10
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Monolithic liningsSupports therefor
F27D 1/12
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incorporating cooling arrangements (constructions of tube assemblies in general F28)
F27D 1/14
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Supports for linings (F27D 1/10 takes precedence)
F27D 1/16
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Making or repairing linings
F27D 1/18
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Door framesDoors, lids, removable covers
F27D 3/00
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ChargingDischargingManipulation of charge (conveying systems characterised by their application for specified purposes not otherwise provided for B65G 49/00; moving charge through a furnace F27B 9/14)
F27D 5/00
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Supports, screens, or the like for the charge within the furnace (travelling or movable supports F27D 3/12)
F27D 7/00
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Forming, maintaining, or circulating atmospheres in heating chambers
F27D 9/00
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Cooling of furnaces or of charges therein (F27D 1/00, F27D 3/00 take precedence)
F27D 11/00
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Arrangement of elements for electric heating in or on furnaces (electric heating per seH05B)
F27D 13/00
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Apparatus for preheating chargesArrangements for preheating charges
F27D 15/00
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Handling or treating discharged materialSupports or receiving chambers therefor
F27D 17/00
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Arrangement for using waste heat (heat-exchangers per seF28)Arrangement for using, or disposing of, waste gases (removing fumes in general B08B 15/00)
F27D 19/00
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Arrangement of controlling devices
F27D 21/00
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Arrangement of monitoring devicesArrangements of safety devices
F27D 25/00
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Devices for removing incrustations [2010.01]
F27D 27/00
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Stirring devices for molten material (F27D 3/14 takes precedence) [2010.01]
F27D 99/00
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Subject matter not provided for in other groups of this subclass [2010.01]
F28
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HEAT EXCHANGE IN GENERAL
F41
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WEAPONSBLASTING
F41
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WEAPONS
F42
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AMMUNITIONBLASTING
F99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
G
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SECTION G — PHYSICS
H
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SECTION H — ELECTRICITY

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