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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23/00
Working measures on existing buildings,
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E04G23/02
Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
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E04G23/0218
Increasing or restoring the load-bearing capacity of building construction elements
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