Photographic exposure control

Details Photographic exposure control Photographic exposure control

1983-11-25

1986-04-01

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D16 33

Patent

active

D02832275

REFERENCES:
patent: D205688 (1966-09-01), Lakin
patent: D223349 (1972-04-01), Minas
patent: D230355 (1974-02-01), Van Der Broek
patent: D246461 (1977-11-01), Chapman
patent: 3001459 (1961-09-01), Wyckoff
patent: 3011388 (1961-12-01), Baumbach
patent: 3020801 (1962-02-01), Lander
patent: 3246334 (1966-04-01), Devereau
patent: 3322025 (1967-05-01), Dauser
patent: 3375751 (1968-04-01), Engborg
patent: 3819275 (1974-06-01), Aimi
patent: 3874793 (1975-04-01), Nielsen

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