Film counter
US4645322A · kind A · utility
5Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 1986 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | May 1, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/36
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.