Building units and construction elements – Architectural stock material – Extruded shape
Patent
1992-07-09
1993-02-16
Word, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
Patent
active
D03333574
REFERENCES:
patent: D204747 (1966-05-01), Barrell, Jr.
patent: D319509 (1991-08-01), Ogitvie
patent: 742549 (1903-10-01), Zeh
patent: 3208564 (1965-09-01), Sitterly
patent: 3656515 (1972-04-01), Wogerbaur et al.
patent: 4333283 (1982-06-01), Ebata
patent: 4747248 (1988-05-01), Fahs
APCO Graphics, Inc.
Clark Doris
Word A. Hugo
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