Patent classifications
E
FIXED CONSTRUCTIONS
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E04
BUILDING
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E04B
GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
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2/00
Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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E04B2/56
Load-bearing; walls of framework or pillarwork; Walls incorporating load-bearing elongated members
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E04B2/58
with elongated members of metal
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