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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13/00
Coverings or linings, e.g. for walls or ceilings
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E04F13/002
made of webs, e.g. of fabrics, or wallpaper, used as coverings or linings
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