Portable movie projector

Details Portable movie projector Portable movie projector

1978-04-19

1981-01-06

Kemper, Catherine E.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1602

Patent

active

D02577763

REFERENCES:
patent: D215969 (1969-11-01), Anderson
patent: 3375054 (1968-03-01), Hughes
patent: 3704054 (1972-11-01), Robak
patent: 3715155 (1973-02-01), Grupp

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