Building units and construction elements – Architectural stock material – Extruded shape
Patent
1991-11-13
1993-10-19
Word, A. Hugo
Building units and construction elements
Architectural stock material
Extruded shape
D25125
Patent
active
D03405346
REFERENCES:
patent: 226823 (1880-04-01), Baird
patent: D253614 (1979-12-01), Corbin
patent: 2837786 (1958-06-01), Fryar, Jr.
patent: 3475866 (1969-11-01), Johansen
patent: 3521404 (1970-07-01), Hagar et al.
patent: 4079550 (1978-03-01), Bursk et al.
patent: 4686793 (1987-08-01), Mills
McConnell Michael J.
Slater James T.
Clark Doris
Word A. Hugo
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