Molded building block

Details Molded building block Molded building block

1990-10-31

1994-02-15

Word, A. Hugo

Building units and construction elements

Architectural stock material

Construction block or brick type

Patent

active

D03443507

REFERENCES:
patent: D191202 (1961-08-01), Walton
patent: D295541 (1988-05-01), Knudsen
patent: 1845201 (1932-02-01), Shepard
patent: 2044735 (1936-06-01), Pelton
patent: 2073673 (1937-03-01), Blake
patent: 2140226 (1938-12-01), Harrap
patent: 3347048 (1967-10-01), Brown et al.
patent: 3422588 (1969-01-01), Stewart, Jr.
patent: 3845618 (1974-11-01), Meyerson
patent: 4544305 (1985-10-01), Hair
patent: 4719737 (1988-01-01), Swart

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