Patent classifications
E
FIXED CONSTRUCTIONS
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E04
BUILDING
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E04F
FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
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E04F15/02
Flooring or floor layers composed of a number of similar elements
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E04F15/022
Flooring consisting of parquetry tiles on a non-rollable sub-layer of other material, e.g. board, concrete, cork
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