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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E04C2/44
characterised by the purpose
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E04C2/50
Self-supporting slabs specially adapted for making floors ceilings, or roofs, e.g. able to be loaded
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