Access door

Details Access door Access door

1982-01-04

1984-05-22

Word, A. Hugo

Building units and construction elements

Prefabricated unit

Closure

Patent

active

D02739941

REFERENCES:
patent: 3975870 (1976-08-01), Naka
patent: 4300440 (1981-11-01), Holter
Sweet's Architectural Catalog, File 1981, 8.12/BA, p. 7, type FC at top left.

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