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Class Information
Number: 352/204
Name: Optics: motion pictures > Shutters
Description: Subject matter including means to cyclically interrupt the light from the illuminator in the projector or to the sensitized carrier in the camera.

Sub-classes under this class:

Class Number Class Name Patents
352/207 Rectilinearly movable 4
352/208 Rotary 19
352/205 With plural light paths 0

Patents under this class:

Patent Number Title Of Patent Date Issued
8243252 Movie copy protection Aug. 14, 2012
8218879 System and method for shutter detection Jul. 10, 2012
8070292 Viewfinder system for a camera Dec. 6, 2011
7907248 Movie copy protection Mar. 15, 2011
7165848 Projection type video display Jan. 23, 2007
6784971 Digital projecting apparatus and method with asymmetrical stroboscopy Aug. 31, 2004
6741323 Motion picture subtitle system and method May. 25, 2004
6513932 Motion picture film projector Feb. 4, 2003
6296359 Cinematic film projector Oct. 2, 2001
6257725 Shutter assembly for a motion film projection Jul. 10, 2001
6172734 Shutter Jan. 9, 2001
6139153 Motion picture camera with a capping shutter Oct. 31, 2000
6120151 System and method for transporting film and motion picture projector utilizing same Sep. 19, 2000
3944349 Shutter assembly Mar. 16, 1976

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