Building units and construction elements – Prefabricated unit – Closure
Patent
1980-11-17
1982-12-28
Word, A. Hugo
Building units and construction elements
Prefabricated unit
Closure
D2502
Patent
active
D02674360
REFERENCES:
patent: D240812 (1976-08-01), Imbrecht
patent: D251741 (1979-05-01), Smallwood et al.
patent: 3690299 (1972-09-01), Johnson
patent: 3878645 (1975-04-01), Porter
patent: 4043079 (1977-08-01), Smith
Price Gerald L.
Word A. Hugo
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