Building units and construction elements – Architectural stock material – Extruded shape
Patent
1999-06-10
2000-05-09
Clark, Doris
Building units and construction elements
Architectural stock material
Extruded shape
2501
Patent
active
D04247124
REFERENCES:
patent: D299965 (1989-02-01), Litchfield et al.
patent: 5584157 (1996-12-01), Sun
Clark Doris
Dayton Technologies, Inc.
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