Patent classifications
E
FIXED CONSTRUCTIONS
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E04
BUILDING
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E04G
SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
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11/00
Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
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E04G11/36
for floors, ceilings, or roofs of plane or curved surfaces; end formpanels for floor shutterings
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E04G11/38
for plane ceilings of concrete
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