Double layer shade

Details Double layer shade Double layer shade

1991-10-03

1994-07-05

Douglas, Alan P.

Furnishings

Window covering

Venetian blind

Patent

active

D03483711

REFERENCES:
patent: 1409451 (1922-03-01), Jaeger
patent: 2201356 (1940-05-01), Terrell
patent: 2350094 (1944-05-01), Butts
patent: 2509033 (1950-05-01), Carver
patent: 4651795 (1987-03-01), Valle et al.
patent: 4719956 (1988-01-01), Valle
patent: 4953610 (1990-09-01), Phillips et al.
patent: 4974656 (1990-12-01), Judkins
patent: 5097884 (1992-03-01), Sevcik et al.

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