Film strip viewer

Details Film strip viewer Film strip viewer

1978-03-10

1980-06-24

Kemper, Catherine E.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D16 18, D1602

Patent

active

D02555816

REFERENCES:
patent: D112013 (1938-11-01), Whitman, Jr.
patent: 1450555 (1923-04-01), Lepine
patent: 1999133 (1935-04-01), Shapiro
patent: 2029415 (1936-02-01), Dennis
patent: 2588803 (1952-03-01), Coffey, Sr.
patent: 4073581 (1978-02-01), Rayburn

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