Building units and construction elements – Prefabricated unit – Closure
Patent
1983-07-18
1986-04-22
Word, A. Hugo
Building units and construction elements
Prefabricated unit
Closure
Patent
active
D02835487
REFERENCES:
patent: 3975870 (1976-08-01), Naka
patent: 4300440 (1981-11-01), Holter
Sweet's Architectural Catalog File, 1981, Section 8.12/Ba, p. 7, type FC at top left.
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