Building units and construction elements – Prefabricated unit – Closure
Patent
1997-03-11
1998-07-21
Clark, Doris
Building units and construction elements
Prefabricated unit
Closure
2502
Patent
active
D03963012
REFERENCES:
patent: D328354 (1992-07-01), Hosoyama
patent: 3205351 (1965-09-01), Walker
patent: 5531049 (1996-07-01), Hirai et al.
Fujimoto Norioki
Numao Masanobu
Takahashi Kazuo
Takazawa Masashi
Yamada Wazoh
Clark Doris
Sanyo Electric Co,. Ltd.
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