Building units and construction elements – Prefabricated unit – Closure
Patent
1999-05-04
2000-03-28
Clark, Doris
Building units and construction elements
Prefabricated unit
Closure
2502
Patent
active
D04220897
REFERENCES:
patent: D239543 (1976-04-01), Kratky
patent: 5396732 (1995-03-01), Andersen
A-Plast AB
Clark Doris
LandOfFree
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