Building units and construction elements – Architectural stock material – Extruded shape
Patent
1994-04-12
1997-06-24
Clark, Doris
Building units and construction elements
Architectural stock material
Extruded shape
2501
Patent
active
D03802817
REFERENCES:
patent: 3041784 (1962-07-01), Faeer et al.
patent: 3399916 (1968-09-01), Ensor
patent: 3466831 (1969-09-01), Lenoir
patent: 3656515 (1972-04-01), Wogercaw et al.
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