Building units and construction elements – Architectural stock material – Construction block or brick type
Patent
1991-01-30
1993-02-16
Word, A. Hugo
Building units and construction elements
Architectural stock material
Construction block or brick type
Patent
active
D03333540
REFERENCES:
patent: D215714 (1969-10-01), Locke
patent: D266875 (1982-11-01), dos Santos
patent: 1544478 (1925-06-01), Payne
patent: 2191217 (1940-02-01), Liebowitz
patent: 2201110 (1940-05-01), Markram
patent: 3290849 (1966-12-01), Wright
patent: 4285179 (1981-08-01), Goldinger
Adams Products Company
Clark Doris
Jenkins Richard E.
Word A. Hugo
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