Window operator handle design

Details Window operator handle design Window operator handle design

1992-05-13

1994-09-20

Douglas, Alan P.

Furnishings

Window covering

Element or attachment

D 6579

Patent

active

D03506665

REFERENCES:
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patent: 3457675 (1969-07-01), Armstrong
patent: 3523389 (1970-08-01), Gray
patent: 4083264 (1978-04-01), Van Klompenburg
patent: 4253276 (1981-03-01), Peterson et al.
patent: 4324072 (1982-04-01), Sterner, Jr.
patent: 4616443 (1986-10-01), Araki et al.
patent: 4937976 (1990-07-01), Tucker et al.
patent: 5103590 (1992-04-01), Hanemaayer
patent: 5201143 (1993-04-01), Nakanishi

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