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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
E01
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BUILDING
E01
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CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
E02
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HYDRAULIC ENGINEERINGFOUNDATIONSSOIL-SHIFTING
E03
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WATER SUPPLYSEWERAGE
E04
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BUILDING
E04B
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GENERAL BUILDING CONSTRUCTIONSWALLS, e.g. PARTITIONSROOFSFLOORSCEILINGSINSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of openings in walls, floors, or ceilings E06B 1/00)
E04B 1/00
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Constructions in generalStructures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs (scaffolds, shutterings E04G; structures specially adapted for buildings for special purposes, general layout of buildings, e.g. modular co-ordination, E04H; the particular parts of buildings, see the relevant groups for those parts)
E04B 1/02
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Structures consisting primarily of load-supporting, block-shaped or slab-shaped elements (E04B 1/32-E04B 1/36 take precedence)
E04B 1/04
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. . the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
E04B 1/06
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. . . the elements being prestressed
E04B 1/08
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. . the elements consisting of metal
E04B 1/10
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. . the elements consisting of wood
E04B 1/12
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. . the elements consisting of other material
E04B 1/14
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. . the elements being composed of two or more materials (of reinforced concrete E04B 1/04)
E04B 1/16
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Structures made from masses, e.g. concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, sub-structures to be coated with load-bearing material (E04B 1/32-E04B 1/36 take precedence)
E04B 1/18
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Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons (E04B 1/32-E04B 1/36 take precedence; elongated load-supporting parts as elements, trusses, truss-like structures E04C 3/00)
E04B 1/19
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. . Three-dimensional framework structures [2]
E04B 1/20
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. . the supporting parts consisting of concrete, e.g. reinforced concrete, or other stone-like material
E04B 1/21
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. . . Connections specially adapted therefor [2]
E04B 1/22
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. . . with parts being prestressed
E04B 1/24
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. . the supporting parts consisting of metal
E04B 1/26
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. . the supporting parts consisting of wood
E04B 1/28
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. . the supporting parts consisting of other material
E04B 1/30
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. . the supporting parts being composed of two or more materialsComposite steel and concrete constructions (of reinforced concrete E04B 1/20)
E04B 1/32
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Arched structuresVaulted structuresFolded structures (vaulted roofs E04B 7/08)
E04B 1/34
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Extraordinary structures, e.g. with suspended or cantilever parts supported by masts or tower-like structures enclosing elevators or stairsFeatures relating to the elastic stability (E04B 1/342, E04B 1/343, E04B 1/348 take precedence; for floors E04B 5/43; buildings for special purposes, e.g. withstanding earthquake, E04H)
E04B 1/342
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Structures covering a large free area, whether open-sided or not, e.g. hangars, halls (roof trusses E04C 3/00; non-structural features for specified purposes, see the relevant groups of E04H)
E04B 1/343
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Structures characterised by movable, separable, or collapsible parts, e.g. for transport (movable roof parts E04B 7/16; floatable buildings B63B; small prefabricated buildings, transportable as a whole, E04H 1/12; small garages E04H 6/02; tents or canopies, in general E04H 15/00)
E04B 1/344
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. . with hinged parts
E04B 1/346
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. . Rotary buildingsBuildings with rotary units, e.g. rooms
E04B 1/348
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Structures composed of units comprising at least considerable parts of two sides of a room, e.g. box-like or cell-like units closed or in skeleton form (wall units locating conduits or the like E04C 2/52)
E04B 1/35
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Extraordinary methods of construction, e.g. lift-slab, jack-block (E04B 1/34 takes precedence; falsework, shuttering for shaping walls, floors, ceilings or roofs for structures of particular shape in situE04G 11/04; conveying or assembling of building materials E04G 21/00; working measures on existing buildings E04G 23/00)
E04B 1/36
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Bearings or like supports allowing movement (for bridges E01D 19/04; buildings withstanding earthquake E04H 9/02)
E04B 1/38
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Connections for building structures in general
E04B 1/41
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. . Connecting devices specially adapted for embedding in concrete or masonry (spacers for cavity walls E04B 2/30, E04B 2/44; connectors for reinforcing elements E04C 5/16; fastening frames to the border of openings E06B 1/56)
E04B 1/48
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. . Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
E04B 1/49
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. . . with self-penetrating parts, e.g. claw dowels
E04B 1/58
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. . of bar-shaped building elements
E04B 1/61
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. . of slab-shaped building elements with each other [5]
E04B 1/62
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Insulation or other protectionElements or use of specified material therefor (chemical compositions C01-C11; implements for applying insulation or sealings E04F 21/00; buildings to withstand, or to provide protection against, external undesired influences E04H 9/00; sealing pipes in walls or partitions F16L 5/02; shielding against dangerous radiation G21F; constructions of particular parts of buildings, see the relevant groups for those parts)
E04B 1/64
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. . for making damp-proofProtection against corrosion (sealings E04B 1/66)
E04B 1/66
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. . Sealings (additions of anti-leak properties to plaster C04B; bituminous sealing masses C08L 95/00; sealings for hydraulic engineering work in general E02B 3/16; against ground humidity or ground water E02D 31/02; coverings against rain or other precipitations of the atmosphere E04D; composition of material or manufacture of sealing foils, see the relevant classes for these foils)
E04B 1/68
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. . . of joints, e.g. expansion joints (packing for joints in roads or airfields E01C 11/02; expansion joints for bridges E01D 19/06; sealing joints between foundation piles E02D 5/14; joints in foundation structures E02D 29/16; devices for sealing the spaces or joints between roof-covering elements E04D 1/36; sealing joints between roof-covering elements E04D 3/38; construction of joints for flooring or floor layers made of masses in situE04F 15/14)
E04B 1/682
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. . . . formed in situ [5]
E04B 1/684
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. . . . using preformed elastomeric elements [5]
E04B 1/686
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. . . . . comprising a plurality of hollow, deformable internal cells [5]
E04B 1/70
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. . Drying or keeping dry, e.g. by air vents (by sealings E04B 1/66; during erection E04G 21/28)
E04B 1/72
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. . Pest control (by keeping dry E04B 1/70; impregnation of wood or like materials B27K)
E04B 1/74
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. . Heat, sound or noise insulation, absorption, or reflection (forms of, or arrangements in, rooms for influencing or directing sound E04B 1/99)Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls (fire protection E04B 1/94; elements chiefly adapted for structural purposes E04C 1/00-E04C 3/00; chiefly adapted for surface coverings E04F 13/00; as underlayers for floor coverings E04F 15/18; closures for wall or like openings E06B)
E04B 1/76
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. . . specifically with respect to heat only (heat insulation in general F16L 59/00)
E04B 1/78
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. . . . Heat insulating elements
E04B 1/80
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. . . . . slab-shaped
E04B 1/82
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. . . specifically with respect to sound only (noise damping in ducts or channels E04F 17/00; noise damping in general G10K 11/16)
E04B 1/84
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. . . . Sound-absorbing elements
E04B 1/86
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. . . . . slab-shaped
E04B 1/88
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. . . Insulating elements for both heat and sound
E04B 1/90
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. . . . slab-shaped
E04B 1/92
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. . Protection against other undesired influences or dangers (buildings providing protection against external dangers E04H 9/00; shielding against dangerous radiation G21F)
E04B 1/94
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. . . against fire (fire-fighting A62C; impregnation of wood or similar materials B27K; fireproof doors E06B 5/16)
E04B 1/98
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. . . against vibrations or shocks (on foundations E02D 31/08)against mechanical destruction, e.g. by air-raids (against incendiary damage only E04B 1/94; finishing work therefor E04F; buildings withstanding earthquake or the like, shelters, arrangements of splinter-catching walls E04H 9/00)
E04B 1/99
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Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound (E04B 1/82 takes precedence; acoustics in general G10K 11/00; electric signal processing for producing a reverberation or echo sound G10K 15/08)
E04B 2/00
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Walls, e.g. partitions, for buildingsWall construction with regard to insulationConnections specially adapted to walls (connections for building structures in general E04B 1/38; insulation for building in general E04B 1/62; building elements of relatively thin form for parts of buildings E04C 2/00)
E04B 5/00
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FloorsFloor construction with regard to insulationConnections specially adapted therefor (elements for floors, e.g. bricks, stones, filling bodies, girders, E04C; flooring as finishing work, insulation of flooring, sectional false floors, e.g. for computers, E04F 15/00) [5]
E04B 7/00
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RoofsRoof construction with regard to insulation (structures for roofs as well as for floors E04B 5/00; ceilings E04B 9/00; greenhouses A01G 9/14; large containers having floating covers B65D 88/34; roof trusses, truss-like structures, joists E04C 3/02; roof coverings E04D) [5]
E04B 9/00
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CeilingsConstruction of ceilings, e.g. false ceilingsCeiling construction with regard to insulation (ceilings used as forms for making floors E04B 5/00; coverings or linings for ceilings E04F 13/00) [5]
E04C
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STRUCTURAL ELEMENTSBUILDING MATERIALS (for bridges E01D; specially designed for insulation or other protection E04B; elements used as building aids E04G; for mining E21; for tunnels E21D; structural elements with broader range of application than for building engineering F16, particularly F16S)
E04D
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ROOF COVERINGSSKY-LIGHTSGUTTERSROOF-WORKING TOOLS (coverings of outer walls by plaster or other porous material E04F 13/00)
E04F
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FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B)
E04G
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SCAFFOLDINGFORMSSHUTTERINGBUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIR USEHANDLING BUILDING MATERIALS ON THE SITEREPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
E04H
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BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSESSWIMMING OR SPLASH BATHS OR POOLSMASTSFENCINGTENTS OR CANOPIES, IN GENERAL (foundations E02D) [4]
E05
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LOCKSKEYSWINDOW OR DOOR FITTINGSSAFES
E06
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DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS, IN GENERALLADDERS
E21
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EARTH OR ROCK DRILLINGMINING
E21
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EARTH OR ROCK DRILLINGMINING
E99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
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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