Hollow construction block

Details Hollow construction block Hollow construction block

1996-02-22

1997-12-09

Shooman, Ted

Building units and construction elements

Architectural stock material

Construction block or brick type

D25118, 2501

Patent

active

D03874311

REFERENCES:
patent: D213618 (1969-03-01), Pickering
patent: D251204 (1979-02-01), Ceglia
patent: D281627 (1985-12-01), Dos Santos
patent: 1689107 (1928-10-01), Bradley
patent: 2019653 (1935-11-01), Buyer
patent: 2610503 (1952-09-01), Hall
patent: 2745276 (1956-05-01), Kuhlman
patent: 2911818 (1959-11-01), Smith
patent: 3618279 (1971-11-01), Sease
patent: 4314431 (1982-02-01), Rabassa

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