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E04C1/00—Building elements of block or other shape for the construction of parts of buildings
E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
E04C1/41—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts composed of insulating material and load-bearing concrete, stone or stone-like material
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FR545807D1922-01-121922-01-12
Improvements to concrete blocks or stones intended for construction
ExpiredFR545807A
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