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Class Information
Number: 352/168
Name: Optics: motion pictures > Camera and/or projector drive mechanisms > Having plural or interchangeable drives
Description: Subject matter having more than one source of motive power, either contained within the device or substitutable for one another.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7566136 |
Device for conveying a motion picture film |
Jul. 28, 2009 |
| 6141079 |
Camera system |
Oct. 31, 2000 |
| 5739895 |
Film saving system |
Apr. 14, 1998 |
| 5534954 |
Motion picture system |
Jul. 9, 1996 |
| 5517262 |
Motion picture drive system |
May. 14, 1996 |
| 5479223 |
Film conversion sprocket |
Dec. 26, 1995 |
| 4607804 |
Film winding and rewinding apparatus |
Aug. 26, 1986 |
| 4567526 |
Servo control circuit module for use in a television camera |
Jan. 28, 1986 |
| 4131344 |
Motor control system for automatic processing of photographic film strips |
Dec. 26, 1978 |
| 4105315 |
Microfilm reading system |
Aug. 8, 1978 |
| 4037951 |
Audio-visual cartridge and player |
Jul. 26, 1977 |
| 4009950 |
Motion picture projection apparatus with film feeding speed changing apparatus |
Mar. 1, 1977 |
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