Film drive mode change actuator
US3977623A · kind A · utility
4Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1975 |
| Grant date | Aug 31, 1976 |
| Priority date | — |
| Expiry date | Jan 21, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for initiating operating mode change in a film handling apparatus in response to cessation of film movement incident to an end-of-film condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.