Copier control device or similar article

Details Copier control device or similar article Copier control device or similar article

1983-06-21

1985-09-03

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

Patent

active

D02804166

REFERENCES:
patent: D236850 (1975-09-01), Knodt
patent: D237905 (1975-12-01), Knodt
patent: D267804 (1983-02-01), Kalvitis
patent: D274820 (1984-07-01), Sizer

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