Film developing tube

Details Film developing tube Film developing tube

1984-09-24

1986-07-08

Mathews, A. A.

354331, 354338, G03D 1304

Patent

active

045989885

ABSTRACT:
A film developing tube for developing roll film is provided. The preferred embodiment is a tubular developing tank with a light trap incorporated at one end which allows the reagents to be easily and efficiently cycled over the film with no requirement of total darkness once the film has been loaded into the tube.

REFERENCES:
patent: 2638829 (1953-05-01), Singer
patent: 3192847 (1965-07-01), Erner
patent: 3668997 (1972-06-01), Ratowsky
patent: 3847477 (1974-11-01), Haar
patent: 4211481 (1980-07-01), Bernhardt
patent: 4346979 (1982-08-01), Faubert
patent: 4350430 (1982-09-01), Johnson
patent: 4355879 (1982-10-01), Faubert

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