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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E04C2/30
characterised by the shape or structure
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E04C2/40
composed of a number of smaller components rigidly or movably connected together, e.g. interlocking, hingedly connected; of particular shape, e.g. not rectangular of variable shape or size, e.g. flexible or telescopic panels
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