Shutter

Details Shutter Shutter

1989-02-02

1991-10-29

Word, A. Hugo

Building units and construction elements

Prefabricated unit

Closure

Patent

active

D03212572

REFERENCES:
patent: D175808 (1955-10-01), Teroux
patent: D193288 (1962-08-01), Thompson
patent: D201956 (1965-08-01), Seman
patent: D217597 (1970-05-01), Johnson
patent: D217904 (1970-06-01), Johnson
patent: D220474 (1971-04-01), Sassano
patent: D223439 (1972-04-01), Stilwell
patent: D224830 (1972-09-01), Stilwell
patent: D235336 (1975-06-01), Lee
patent: D251389 (1979-03-01), Engman
patent: D251390 (1979-03-01), Engman
patent: 1904110 (1933-04-01), Willmann
patent: 2561605 (1951-07-01), Bascom
patent: 3455079 (1969-07-01), Frederick
patent: 3548555 (1970-12-01), Trostle et al.
patent: 3731444 (1973-05-01), Tobin
Schoner Wohnen-Magazine Ad-Aug. 1978.

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