Building units and construction elements – Prefabricated unit – Closure
Patent
1997-12-22
1999-03-30
Clark, Doris
Building units and construction elements
Prefabricated unit
Closure
2502
Patent
active
D04075005
REFERENCES:
patent: D334431 (1993-03-01), Davlantes
patent: 4760872 (1988-08-01), Hale, Jr.
patent: 5581940 (1996-12-01), Peterson
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