Cover for a field camera focus plate

Details Cover for a field camera focus plate Cover for a field camera focus plate

1983-03-21

1985-08-13

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D16;38

Patent

active

D02801051

REFERENCES:
patent: D230516 (1974-02-01), Yanagawa
patent: 1202294 (1916-10-01), Lang
patent: 1431657 (1922-10-01), Hilder
patent: 1675598 (1928-07-01), Chetteville
patent: 2196759 (1940-04-01), Drotning
patent: 2500058 (1950-03-01), Brundage
patent: 3151536 (1964-10-01), Raitt
patent: 3249029 (1966-05-01), Wareham
patent: 4348086 (1982-09-01), Forscher

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