Building units and construction elements – Prefabricated unit – Closure
Patent
1986-04-14
1989-06-13
Word, A. Hugo
Building units and construction elements
Prefabricated unit
Closure
Patent
active
D03016200
REFERENCES:
patent: D216804 (1970-03-01), Moore
patent: D239543 (1976-04-01), Kratky
patent: 942067 (1909-12-01), Heidt
patent: 2001181 (1935-05-01), Burcham
patent: 2803074 (1957-08-01), Brokish
patent: 2896277 (1959-07-01), Halligan
patent: 4384428 (1983-05-01), Cox
patent: 4573285 (1986-05-01), Jokel
patent: 4583715 (1986-04-01), Wright
Johnson Robert T.
Nu-Line Industries
Word A. Hugo
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