Slide projector magazine

Details Slide projector magazine Slide projector magazine

1980-08-12

1983-06-21

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1602

Patent

active

D02694360

REFERENCES:
patent: D180765 (1957-08-01), Briskin
patent: D231859 (1974-06-01), Annett
patent: 2805503 (1957-09-01), McKee
patent: 2919021 (1959-12-01), Robinson
patent: 3009274 (1961-11-01), Kremp
patent: 3081870 (1963-03-01), Plettner
patent: 3718392 (1973-02-01), Harvey
patent: 3830566 (1974-08-01), Bennett

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