Building units and construction elements – Architectural stock material – Construction block or brick type
Patent
1997-03-11
1999-09-21
Barkai, Raphael
Building units and construction elements
Architectural stock material
Construction block or brick type
D25151, D25138, 2501
Patent
active
D04142756
REFERENCES:
patent: D305571 (1990-01-01), Sakata
patent: 2605681 (1952-08-01), Trief
patent: 3036822 (1962-05-01), Andersen
patent: 4262467 (1981-04-01), Faisant et al.
patent: 4973192 (1990-11-01), Hair
patent: 5775040 (1998-07-01), Lalvani
Barkai Raphael
Budzyn Ludomir A.
Casella Anthony J.
Hespos Gerald E.
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