Camera

Details Camera Camera

1978-06-01

1981-01-13

Kemper, Catherine E.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1601

Patent

active

D02578506

REFERENCES:
patent: D148765 (1948-02-01), Clement
patent: D170032 (1953-07-01), Schwartz et al.
patent: D222845 (1972-01-01), Matsuda et al.
patent: D234820 (1975-04-01), Kato
patent: D252399 (1979-07-01), Waaske
patent: 3103151 (1963-09-01), Borghesani
patent: 4172647 (1979-10-01), Gold

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