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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1/00
Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
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E04B1/16
Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
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E04B1/166
with curved surfaces, at least partially cast in situ in order to make a continuous concrete shell structure
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