| Patents for G03B 31 - Associated working of cameras or projectors with sound-recording or -reproducing means (1,369) |
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| 07/26/1977 | US4037948 Photographic camera which can use a film cartridge housing a film containing sound recording belt |
| 07/26/1977 | US4037947 Film-transport control for sound-film camera |
| 06/28/1977 | US4032224 Sound recording and reproducing system for sound motion picture photography |
| 06/14/1977 | US4029405 Sprocketed film transport |
| 06/07/1977 | US4027958 System for controlling reproduction of audio tape in synchronism with projection of video film |
| 06/07/1977 | US4027955 Sound-cine-camera |
| 05/24/1977 | US4025174 Cinecamera capable of synchronous recording |
| 05/03/1977 | US4021104 Film-feeding speed controlling device for sound-cinecamera |
| 04/26/1977 | US4020503 Still image slide with sound track control |
| 04/26/1977 | US4019814 Device for use on a film projector for copying films |
| 03/29/1977 | US4014604 Sound slide |
| 03/08/1977 | US4011416 Multiple color light frequencies switched audio modulation |
| 03/01/1977 | US4010491 Automatically retractable tape in sound-slide means |
| 03/01/1977 | US4009950 Motion picture projection apparatus with film feeding speed changing apparatus |
| 03/01/1977 | US4009949 Threading and synchronization system for sound motion picture projector |
| 02/01/1977 | US4005931 Sealed cassette for optical sound projection |
| 01/18/1977 | US4003643 Motion-picture camera accommodating silent-film and sound-film cassettes |
| 01/04/1977 | US4000940 Camera allowing simultaneous sound recording |
| 12/28/1976 | US4000496 Filming camera with a synchronous sound recording |
| 12/28/1976 | US3999845 Mechanical sound reproducing means for an audio-visual device |
| 12/28/1976 | US3999843 Cartridge-loaded sound motion picture projection |
| 12/28/1976 | US3999842 Synchronization procedure and means of application of the procedure |
| 12/14/1976 | US3997720 Optical picture recording system |
| 12/07/1976 | US3995946 Motion picture sound film apparatus |
| 11/30/1976 | US3995315 Audio circuit with noise muting feature |
| 11/16/1976 | US3992305 Shuttle speed control device |
| 11/02/1976 | US3989361 Film speed control for sound motion picture projector |
| 10/19/1976 | US3986770 Movie camera adapted for simultaneous motion picture and magnetic sound recording on film |
| 10/05/1976 | US3984180 Cooling system for an audio visual device |
| 10/05/1976 | US3984179 Motion picture camera with sound recording means |
| 09/28/1976 | US3982826 Cine camera |
| 09/21/1976 | US3981570 Motion picture projector device as audio-visual aid and audio-visual system using the same |
| 09/21/1976 | US3981423 Two speed planetary gear train |
| 09/14/1976 | US3980405 Cathode-ray tube picture projection apparatus |
| 09/07/1976 | US3979774 Digital control system and method for the synchronization of audio-visual equipment |
| 08/10/1976 | US3973842 Magazine for slides for the simultaneous projection of pictures and reproduction of sound |
| 08/10/1976 | US3973839 Special effects generation and control system for motion pictures |
| 08/03/1976 | US3972604 Sound-recording motion-picture camera |
| 07/20/1976 | US3970378 Movie camera capable of magnetic recording simultaneously with filming |
| 07/20/1976 | US3970377 Sound motion picture processing and projection system |
| 07/13/1976 | US3969593 Sound recording on color film by hue modulation |
| 07/13/1976 | US3969021 Motion picture camera with sound recording means |
| 07/13/1976 | US3968576 Visual correspondence for the improvement of reading |
| 07/06/1976 | US3967886 Motion picture camera capable of synchronized sound recording |
| 06/29/1976 | US3965762 Single speed frictional drive unit with magnetic biasing means |
| 06/22/1976 | US3964826 Dual sound system |
| 06/15/1976 | US3963335 Magnetic tape carrier |
| 06/15/1976 | US3963331 Camera capable of simultaneous sound recording |
| 05/25/1976 | US3958870 Tacked film roll and method of making same |
| 05/25/1976 | US3958869 Sound motion picture camera |
| 05/25/1976 | US3958868 Sound system pinch roller actuating device |
| 05/18/1976 | US3957363 Motion picture camera with synchronous recording system |
| 04/27/1976 | US3953118 Reset mechanism for an audio-visual device |
| 04/13/1976 | US3950083 Fading audio-level controls for sound-recording motion picture cameras |
| 03/23/1976 | US3945718 Sync contact switch for movie camera |
| 03/16/1976 | US3944348 Method of and means for checking the correlation of two data carriers |
| 03/16/1976 | US3944234 Audio apparatus |
| 03/09/1976 | US3942884 Interactive audio-visual apparatus |
| 03/09/1976 | US3942882 Film transport speed controlling device |
| 03/02/1976 | US3941462 Method and apparatus for transferring wide-band sound signals |
| 02/24/1976 | US3940208 Control frequency generator for a movie camera |
| 02/17/1976 | US3938885 Multipurpose audio-visual cassette system |
| 02/10/1976 | US3938194 Method of and apparatus for obtaining synchronous movement between two media |
| 02/10/1976 | US3937567 Continuous motion picture projector apparatus |
| 02/03/1976 | US3936167 Device for automatically controlling a protective filter in a film projector |
| 02/03/1976 | US3936166 Multipurpose audio-visual cassette method |
| 01/13/1976 | US3932032 Motion picture sound synchronization |
| 01/06/1976 | US3930721 Slidable mirror for adjustable speed projector with synchronized sound recorder |
| 01/06/1976 | US3930654 Sound track unit for audio-visual apparatus |