Framing and spacing device for camera

Details Framing and spacing device for camera Framing and spacing device for camera

1983-12-21

1986-05-13

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D16 38, D16 44, D16 47

Patent

active

D02838214

REFERENCES:
patent: 50284 (1865-10-01), Shive
patent: D197257 (1963-12-01), Fladlien
patent: D246527 (1977-11-01), Pfefer
patent: 2511531 (1950-06-01), Hencke
patent: 3396649 (1968-08-01), Bishop
patent: 3709119 (1973-01-01), Van Der Meer
patent: 3836927 (1974-09-01), Dine
patent: 4107716 (1978-08-01), Pfefer
patent: 4218122 (1980-08-01), Drafahl
patent: 4222654 (1980-09-01), Bodenhamer

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