Cinder block

Details Cinder block Cinder block

1995-11-16

1997-01-14

Barkai, Raphael

Building units and construction elements

Architectural stock material

Construction block or brick type

Patent

active

D03773973

REFERENCES:
patent: 253416 (1882-02-01), O'Brien
patent: 800067 (1905-09-01), Brooke
patent: 1710833 (1929-04-01), Mirabella et al.
patent: 3726042 (1973-04-01), Haile
patent: 4031678 (1977-06-01), Schuring
patent: 4035975 (1977-07-01), Gergely
patent: 4441298 (1984-04-01), Limousin
patent: 4565043 (1986-01-01), Mazzarese
patent: 4651485 (1987-03-01), Osborne
patent: 5163261 (1992-11-01), O'Neill
patent: 5465538 (1995-11-01), Powers, Jr.

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