Concrete block

Details Concrete block Concrete block

1985-07-08

1988-11-08

Gandy, James M.

Building units and construction elements

Architectural stock material

Construction block or brick type

Patent

active

D02984644

REFERENCES:
patent: D57111 (1921-02-01), Bruce
Rampf Formen Brochure, p. 13, Concrete Block, No. 3, bottom left side of page.

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