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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E04F15/08
only of stone or stone-like material, e.g.; ceramics; , concrete; of glass; or with a top layer of stone or stone-like material, e.g. ceramics, concrete or glass
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E04F15/082
with a top layer of stone or stone-like material, e.g. ceramics, concrete or glass in combination with a lower layer of other material
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E04F15/087
The lower layer being of organic plastic with or without reinforcements or filling materials
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