Building units and construction elements – Architectural stock material – Extruded shape
Patent
1992-09-08
1994-04-05
Word, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
Patent
active
D03458083
REFERENCES:
patent: 2697932 (1954-12-01), Goodwin
patent: 2830684 (1958-04-01), Bancroft
patent: 3975875 (1976-08-01), Gross, Jr.
patent: 4069641 (1978-01-01), De Zutter
patent: 4344257 (1982-08-01), Anderson
patent: 4720951 (1988-01-01), Thom et al.
Clark Doris
Word A. Hugo
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