Building units and construction elements – Architectural stock material – Extruded shape
Patent
1992-04-22
1994-09-13
Word, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
Patent
active
D03506126
REFERENCES:
patent: D266143 (1982-09-01), Smith
patent: D267776 (1983-02-01), Holgersson et al.
patent: D293098 (1987-12-01), Layton
patent: D314757 (1991-02-01), Gecchelin
patent: 2292395 (1942-08-01), O'Brien
patent: 3240233 (1966-03-01), Johnston
patent: 3471629 (1969-10-01), O'Leary
patent: 4326097 (1982-04-01), Heinrichs, Jr.
patent: 4667782 (1987-05-01), Toase et al.
Clark Doris
Word A. Hugo
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