Film counter

Details Film counter Film counter

1986-05-01

1987-02-24

Mathews, A. A.

354217, 354277, 3542891, G03B 1736, G03B 1750

Patent

active

046453229

ABSTRACT:
Apparatus having a first chamber, for receiving a film cassette containing a plurality of film units of the instant type, and a second chamber, into which the film units are adapted to be sequentially advanced subsequent to their photographic exposure. The second chamber includes a film counter mounted in lighttight relation therewith for indicating the number of exposed film units contained within the second chamber.

REFERENCES:
patent: 308781 (1884-12-01), Menns
patent: 1195187 (1916-08-01), Cuthbert
patent: 2483578 (1949-10-01), Gallistel
patent: 3653313 (1972-04-01), Leduc
patent: 3984852 (1976-10-01), Johnson et al.
patent: 4212524 (1980-07-01), Douglas
patent: 4568163 (1986-02-01), Czumak et al.

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