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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
D01
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TEXTILES OR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
D01
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NATURAL OR ARTIFICIAL THREADS OR FIBRESSPINNING
D02
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YARNSMECHANICAL FINISHING OF YARNS OR ROPESWARPING OR BEAMING
D03
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WEAVING
D04
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BRAIDINGLACE-MAKINGKNITTINGTRIMMINGSNON-WOVEN FABRICS
D05
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SEWINGEMBROIDERINGTUFTING
D06
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TREATMENT OF TEXTILES OR THE LIKELAUNDERINGFLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
D07
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ROPESCABLES OTHER THAN ELECTRIC
D21
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PAPER
D21
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PAPER-MAKINGPRODUCTION OF CELLULOSE
D21B
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FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
D21C
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PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALSREGENERATION OF PULPING LIQUORSAPPARATUS THEREFOR
D21D
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TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE [5]
D21F
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PAPER-MAKING MACHINESMETHODS OF PRODUCING PAPER THEREON
D21G
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CALENDERSACCESSORIES FOR PAPER-MAKING MACHINES (winders or rewinders for finished products, means for adjustment of wrinkles or lateral extensions B65H)
D21H
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PULP COMPOSITIONSPREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21DIMPREGNATING OR COATING OF PAPERTREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21GPAPER NOT OTHERWISE PROVIDED FOR [5]
D21H 11/00
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Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only [5]
D21H 13/00
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Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material (chemical features in the manufacture of artificial fibres D01F) [5]
D21H 15/00
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Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution [5]
D21H 17/00
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Non-fibrous material added to the pulp, characterised by its constitutionPaper-impregnating material characterised by its constitution [5]
D21H 19/00
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Coated paper (coated fibreboard D21J 1/08)Coating material (recording sheets characterised by the coating used to improve ink, dye or pigment receptivity B41M 5/50) [5]
D21H 19/02
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Metal coatings (D21H 19/66 takes precedence) [5]
D21H 19/04
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. . applied as foil [5]
D21H 19/06
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. . applied as liquid or powder [5]
D21H 19/08
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. . applied as vapour, e.g. in vacuum [5]
D21H 19/10
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Coatings without pigments (D21H 19/66 takes precedence) [5]
D21H 19/12
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. . applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds [5]
D21H 19/14
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. . applied in a form other than the aqueous solution defined in group D21H 19/12 [5]
D21H 19/16
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. . . comprising curable or polymerisable compounds (D21H 19/24 takes precedence) [5]
D21H 19/18
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. . . comprising waxes [5]
D21H 19/20
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. . . comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds [5]
D21H 19/22
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. . . . Polyalkenes, e.g. polystyrene [5]
D21H 19/24
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. . . comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds [5]
D21H 19/26
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. . . . Aminoplasts [5]
D21H 19/28
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. . . . Polyesters [5]
D21H 19/30
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. . . . PolyamidesPolyimides [5]
D21H 19/32
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. . . . obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule [5]
D21H 19/34
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. . . comprising cellulose or derivatives thereof [5]
D21H 19/36
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Coatings with pigments (D21H 19/66 takes precedence; metal powder D21H 19/06) [5]
D21H 19/38
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. . characterised by the pigments [5]
D21H 19/40
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. . . siliceous, e.g. clays [5]
D21H 19/42
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. . . at least partly organic [5]
D21H 19/44
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. . characterised by the other ingredients, e.g. the binder or dispersing agent [5]
D21H 19/46
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. . . Non-macromolecular organic compounds [5]
D21H 19/48
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. . . . Diolefins, e.g. butadieneAromatic vinyl monomers, e.g. styrenePolymerisable unsaturated acids or derivatives thereof, e.g. acrylic acid [5]
D21H 19/50
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. . . Proteins [5]
D21H 19/52
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. . . CelluloseDerivatives thereof [5]
D21H 19/54
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. . . Starch [5]
D21H 19/56
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. . . Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds [5]
D21H 19/58
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. . . . Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof [5]
D21H 19/60
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. . . . PolyalkenylalcoholsPolyalkenylethersPolyalkenylesters [5]
D21H 19/62
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. . . Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds [5]
D21H 19/64
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. . . Inorganic compounds [5]
D21H 19/66
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Coatings characterised by a special visual effect, e.g. patterned, textured (marbled paper D21H 27/04) [5]
D21H 19/68
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. . uneven, broken, discontinuous [5]
D21H 19/70
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. . with internal voids, e.g. bubble coatings [5]
D21H 19/72
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Coated paper characterised by the paper substrate [5]
D21H 19/74
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. . the substrate having an uneven surface, e.g. crêped or corrugated paper [5]
D21H 19/76
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. . the substrate having specific absorbent properties [5]
D21H 19/78
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. . . being substantially impervious to the coating [5]
D21H 19/80
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Paper comprising more than one coating (D21H 19/02 takes precedence) [5]
D21H 19/82
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. . superposed [5]
D21H 19/84
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. . on both sides of the substrate [5]
D21H 21/00
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Non-fibrous material added to the pulp, characterised by its function, form or propertiesPaper impregnating or coating material, characterised by its function, form or properties [5]
D21H 23/00
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Processes or apparatus for adding material to the pulp or to the paper (applying liquids or other fluent material to surfaces, in general B05; processes for making continuous lengths of paper D21F 11/00) [5]
D21H 25/00
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After-treatment of paper not provided for in groups D21H 17/00-D21H 23/00 [5]
D21H 27/00
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Special paper not otherwise provided for, e.g. made by multi-step processes [5]
D21J
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FIBREBOARDMANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MÂCHÉ (manufacture of articles by dry processes B27N)
D99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
E
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SECTION E — FIXED CONSTRUCTIONS
F
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SECTION F — MECHANICAL ENGINEERINGLIGHTINGHEATINGWEAPONSBLASTING
G
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SECTION G — PHYSICS
H
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SECTION H — ELECTRICITY

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