Patent classifications
E
FIXED CONSTRUCTIONS
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E04
BUILDING
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E04C
STRUCTURAL ELEMENTS; BUILDING MATERIALS
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2/00
Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
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E04C2/02
characterised by specified materials
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E04C2/04
of concrete or other stone-like material; of asbestos cement;; of cement and other mineral fibres
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