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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13/00
Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies; foundations, sills
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E04G13/06
for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
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