Interlocking block

Details Interlocking block Interlocking block

1996-09-23

1997-12-16

Barkai, Raphael

Building units and construction elements

Architectural stock material

Construction block or brick type

2501

Patent

active

D03878791

REFERENCES:
patent: D30707 (1899-05-01), Paquette
patent: D45509 (1914-10-01), Neff
patent: D251306 (1979-03-01), Ceglia
patent: 868838 (1907-10-01), Brewington
patent: 1472521 (1923-10-01), Harrison
patent: 1592476 (1926-07-01), Torrecelli
patent: 2982380 (1961-05-01), Rose
patent: 3449879 (1969-06-01), Bloom
patent: 4320612 (1982-03-01), Jeffries, Jr.
patent: 4996813 (1991-03-01), Kliethermes, Jr.

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