Building units and construction elements – Prefabricated unit – Closure
Patent
1988-04-25
1989-05-02
Word, A. Hugo
Building units and construction elements
Prefabricated unit
Closure
Patent
active
D03009491
REFERENCES:
patent: D216804 (1970-03-01), Moore
patent: D239543 (1976-04-01), Kratky
patent: 4465262 (1984-08-01), Itri et al.
patent: 4583715 (1986-04-01), Wright
patent: 4607455 (1986-08-01), Bluem
patent: 4677791 (1987-07-01), Larson
patent: 4702036 (1987-10-01), Johnson
Johnson Robert T.
Nu-Line Industries
Word A. Hugo
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