Building units and construction elements – Architectural stock material – Extruded shape
Patent
1997-03-21
1999-04-27
Clark, Doris
Building units and construction elements
Architectural stock material
Extruded shape
2501
Patent
active
D04089316
REFERENCES:
patent: D345429 (1994-03-01), Bancroft
patent: 3859754 (1975-01-01), Budich et al.
Ito Tsutomu
Kusunoki Toshimasa
Turner Michael L.
Clark Doris
YKK Corporation of America
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