Building units and construction elements – Architectural stock material – Extruded shape
Patent
1989-08-21
1991-01-29
Zarfas, Louis S.
Building units and construction elements
Architectural stock material
Extruded shape
Patent
active
D03142418
REFERENCES:
patent: D261314 (1981-10-01), Schmidt
patent: D286197 (1986-10-01), Bancroft
patent: D299970 (1989-02-01), Hardy
patent: 4831781 (1989-05-01), Morton
Clark Doris
Zarfas Louis S,.
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