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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 (of tunnels E21D)
E01B
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PERMANENT WAYPERMANENT-WAY TOOLSMACHINES FOR MAKING RAILWAYS OF ALL KINDS (derailing or rerailing blocks on track, track brakes or retarders B61K)
E01C
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CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKEMACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR (forming road or like surfaces by compacting or grading snow or ice E01H)
E01D
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BRIDGES (bridges extending between terminal buildings and aircraft for embarking or disembarking passengers B64F 1/305)
E01F
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ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
E01H
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STREET CLEANINGCLEANING OF PERMANENT WAYSCLEANING BEACHESCLEANING LANDDISPERSING FOG IN GENERAL (mowers convertible to apparatus for sweeping or cleaning lawns or other surfaces, e.g. to remove snow, or capable of sweeping or cleaning lawns or other surfaces A01D 42/06; cleaning in general B08B) [4]
E01H 1/00
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Removing undesirable matter from roads or like surfaces, with or without moistening of the surface (for snow or ice E01H 5/00; cleaning tramway rails E01H 8/00; obstruction-removers on vehicles B60R 19/00; in combination with application of bitumen or the like E01C 19/16; in combination with application of traffic lines E01C 23/16)
E01H 1/02
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Brushing apparatus (E01H 1/08-E01H 1/14 take precedence; brushes in general A46B)
E01H 1/04
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. . taking-up the sweepings, e.g. for collecting, for loading
E01H 1/05
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. . with driven brushes (E01H 1/04 takes precedence)
E01H 1/08
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Pneumatically dislodging or taking-up undesirable matter (suction cleaners in general A47L 5/00-A47L 9/00)Drying by heat only, or by streams of gas (permanently-installed heating or blowing devices E01C 11/26; heating or drying for road building or repairing E01C 23/14)Cleaning by projecting abrasive particles (sand-blasting in general B24C)
E01H 1/10
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Hydraulically loosening or dislodging undesirable matter (stationary flushing devices E01H 3/04)Raking or scraping apparatus (hand implements E01H 1/12)
E01H 1/12
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Hand implements, e.g. litter pickers (rakes A01D 7/00)
E01H 1/14
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Removing by magnetic effect
E01H 3/00
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Applying liquids to roads or like surfaces, e.g. for dust controlStationary flushing devices (combined with removal of undesirable matter E01H 1/00; spray heads, other outlets B05B)
E01H 4/00
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Making or maintaining surfaces of snow or ice suitable for traffic or sporting purposes, e.g. by compacting snow [4]
E01H 5/00
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Removing snow or ice from roads or like surfacesGrading or roughening snow or ice (by applying de-icing agents E01H 10/00; obstruction removers on vehicles B60R 19/00; sand, gravel or salt spreaders E01C 19/20) [4]
E01H 6/00
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Apparatus equipped with, or having provisions for equipping with, both elements for removal of refuse or the like and elements for removal of snow or ice (E01H 8/10 takes precedence)
E01H 8/00
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Removing undesirable matter from the permanent way of railwaysRemoving undesirable matter from tramway rails (E01H 1/00-E01H 6/00 take precedence)
E01H 10/00
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Improving gripping of ice-bound or other slippery traffic surfaces, e.g. using gritting or thawing materials (roughening ice by means of tools E01H 5/12; applying de-icing agents to rails E01H 8/10; thawing materials C09K 3/18; by constructional features E01C 11/24)
E01H 11/00
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Control of undesirable vegetation on roads or permanent ways of railways (destruction of undesirable vegetation in general A01M 7/00-A01M 15/00, A01M 21/00; weeding involving working the ballast E01B 27/00)Applying liquids, e.g. water, weed-killer, bitumen, to permanent ways (specially to rails E01H 8/10; for preserving sleepers E01B 31/20)
E01H 12/00
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Cleaning beaches
E01H 13/00
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Dispersing fog in general, e.g. on roads, on airfields
E01H 15/00
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Removing undesirable matter, e.g. rubbish, from the land, not otherwise provided for (gatherers for removing stones, roots or the like from the soil A01B 43/00) [4]
E02
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HYDRAULIC ENGINEERINGFOUNDATIONSSOIL-SHIFTING
E03
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WATER SUPPLYSEWERAGE
E04
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BUILDING (layered materials, layered products in general B32B)
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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