Building units and construction elements – Prefabricated unit – Closure
Patent
1997-09-30
1999-07-13
Clark, Doris
Building units and construction elements
Prefabricated unit
Closure
2502
Patent
active
D04120361
REFERENCES:
patent: D199759 (1964-12-01), Becker et al.
patent: D329706 (1992-09-01), Hermens et al.
patent: 4016699 (1977-04-01), Hurvitz
patent: 5274978 (1994-01-01), Burkhart
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