Building units and construction elements – Architectural stock material – Construction block or brick type
Patent
1996-07-18
1997-09-16
Barkai, Raphael
Building units and construction elements
Architectural stock material
Construction block or brick type
2501
Patent
active
D03838579
REFERENCES:
patent: D202361 (1965-09-01), Wolfe
patent: D295788 (1988-05-01), Forsberg
patent: D300254 (1989-03-01), Forsberg
patent: 5257880 (1993-11-01), Janopaul, Jr.
patent: 5490363 (1996-02-01), Woolford
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