Film projector

Details Film projector Film projector

1977-07-20

1980-07-01

Kemper, Catherine E.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1602

Patent

active

D02556880

REFERENCES:
patent: D219841 (1971-02-01), Manome et al.
patent: D242170 (1976-11-01), Kato
patent: D248956 (1978-08-01), Kubnick et al.
patent: D249528 (1978-09-01), Miller et al.

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