| Patents for G11B 3 - Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor (2,921) |
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| 07/10/1979 | CA1058318A1 Pickup arm cartridge |
| 07/10/1979 | CA1058094A1 Disc record cleaning mechanism |
| 07/10/1979 | CA1058093A1 Viscous damping arrangement for record player tone arms |
| 07/10/1979 | CA1058092A1 Phonograph record player with improved tone arm control |
| 07/03/1979 | US4160268 Signal pickup device with tracking control and jitter compensation for a video disc |
| 06/19/1979 | US4158459 Pick-up arms for record players |
| 06/12/1979 | US4157931 Process for producing information carrying discs |
| 06/12/1979 | US4157832 Simplified structure of toy phonograph |
| 06/05/1979 | US4157460 Apparatus for cutting audio disks |
| 06/05/1979 | US4157185 Automatically resettable toy phonograph assembly |
| 06/05/1979 | CA1055854A2 Hand-held playback device, system and method |
| 05/22/1979 | US4155448 Record cleaner |
| 05/16/1979 | EP0001896A1 Trimming disc records |
| 05/15/1979 | US4155041 System for reducing noise transients |
| 05/15/1979 | US4154445 Viscous damping arrangement for record player tone arms |
| 05/08/1979 | US4153821 Optical scanner masking means |
| 05/08/1979 | US4153256 Tangential tracking tonearm |
| 05/01/1979 | US4152727 Reproducing transducer capable of tracking control |
| 05/01/1979 | US4152726 Record disk and method for producing the same with constant width groove |
| 05/01/1979 | US4152550 Apparatus for reproducing a multichannel record disc |
| 05/01/1979 | US4151998 Phonograph tone arm and cartridge damping system |
| 05/01/1979 | CA1053584A1 Phonograph record player with improved tone arm control |
| 04/24/1979 | US4150833 Video/audio disc reproducing apparatus |
| 04/24/1979 | US4150832 Mechanism for causing returning movement of tone arm of toy phonograph |
| 04/24/1979 | US4150831 Toy record player |
| 04/17/1979 | US4149730 Tangential pick-up device for a gramophone turn-table |
| 04/17/1979 | CA1052705A1 Phonograph record player with improved tone arm control |
| 04/17/1979 | CA1052704A1 Phonograph cartridge replaceable stylus assembly |
| 04/10/1979 | US4149207 Cartridge and flexible magnetic disk assembly |
| 04/10/1979 | US4148492 Record players |
| 04/10/1979 | CA1052468A1 Pick up and mounting arm for video disc reproduction |
| 04/03/1979 | US4148067 Modulated groove records with a thick metal layer and method for making same |
| 04/03/1979 | US4147365 Record player |
| 04/03/1979 | US4147364 Non-vibration tone arm |
| 03/27/1979 | US4146236 Counterweight for a tonearm |
| 03/27/1979 | CA1051357A1 Tone arm for record player |
| 03/27/1979 | CA1051356A1 Phonograph record player with improved tone arm control |
| 03/27/1979 | CA1051355A1 Phonograph record player with improved tone arm control |
| 03/20/1979 | US4145718 Video disc pickup with preplay stylus |
| 03/13/1979 | US4143879 Disc-record players |
| 03/06/1979 | US4143248 High fidelity phonograph pick-up arm |
| 03/06/1979 | US4142729 Gramophone equipment |
| 03/06/1979 | CA1050197A1 Sound reproduction compositions |
| 02/27/1979 | US4141531 Disc record press |
| 02/22/1979 | WO1979000075A1 Cleaning and lubricating compositions |
| 02/20/1979 | US4140321 Phonograph cartridge replaceable stylus assembly |
| 02/20/1979 | CA1049139A1 Pickup arm control for video disc player |
| 02/13/1979 | US4139201 Dust removing methods and apparatus |
| 02/13/1979 | US4139200 Apparatus for supporting a pickup arm on a disc player |
| 02/13/1979 | CA1048417A1 Knife-edge bearing system |
| 02/13/1979 | CA1048416A1 Pickup arm lifting device |
| 02/06/1979 | US4138123 Record cleaning device |
| 02/06/1979 | US4138122 Pickup |
| 02/06/1979 | US4138121 Tone arm assembly |
| 01/30/1979 | US4137430 System for recording a signal with tracing and tracking distortion compensation on a record disc |
| 01/30/1979 | US4136884 Electromagnet type pickup device |
| 01/30/1979 | CA1047410A1 Phonograph with photoelectric scanning |
| 01/23/1979 | US4135722 Record-cutting system |
| 01/23/1979 | CA1046944A1 Record player control mechanisms |
| 01/16/1979 | US4135086 Automatic record player of linear tracking pickup arm type |
| 01/16/1979 | US4134594 Antistatic record cleaner |
| 01/16/1979 | US4134593 Automatically operated record player system |
| 01/09/1979 | US4133539 Record player switch-off mechanism |
| 01/02/1979 | US4132935 Phonograph turntable control system |
| 01/02/1979 | US4132413 Toy phonograph |
| 01/02/1979 | CA1045559A1 Phonograph pick-up with plurality of piezoelectric elements |
| 12/26/1978 | US4131284 Damper means for damping the resonance of disc record tone arms |
| 12/19/1978 | US4130620 Photoresist |
| 12/12/1978 | US4129305 Phonograph turntable electro-thermal cueing control |
| 12/12/1978 | US4128909 Roller for cleaning phonograph records |
| 12/12/1978 | CA1044155A1 Turntable mat |
| 12/12/1978 | CA1044154A1 Phonograph pickup arm assembly |
| 12/12/1978 | CA1044153A1 Command disc control for automatic record players |
| 12/05/1978 | US4128247 Stylus position control system |
| 11/28/1978 | US4127274 Tone arm system for record turntable |
| 11/28/1978 | CA1043271A1 Pickup arm assembly |
| 11/28/1978 | CA1043270A1 Method and apparatus for electromechanical recording of short wavelength modulation in a metal master |
| 11/14/1978 | US4125668 Lubricants comprising dialkanolamine derivatives |
| 11/14/1978 | US4125654 Information signal recording disc |
| 11/07/1978 | US4124867 Narrowed-electrode pickup stylus for video disc systems |
| 11/07/1978 | US4124672 Replication utilizing a casting process |
| 11/07/1978 | US4124217 Signal pick-up apparatus for reproducing a recording disc |
| 11/07/1978 | US4124216 Phonograph |
| 11/07/1978 | US4124215 Inertial phonograph device |
| 10/31/1978 | US4123067 Stylus vibrating mechanism in pickup cartridge |
| 10/31/1978 | US4123065 Phonograph for use with record cartridges |
| 10/31/1978 | US4123064 Predetermined index gauge for locating a selected record band on a gramaphone record |
| 10/31/1978 | CA1041440A1 Stylus holder |
| 10/24/1978 | US4121837 Record player having a device for damping vibrations of a tone arm |
| 10/24/1978 | US4121836 Stylus cartridge suspension for record players |
| 10/24/1978 | US4121835 Sound producing straw |
| 10/24/1978 | US4121834 Pick-up device for a phonograph tone arm |
| 10/17/1978 | US4120504 Disk tracking and support apparatus |
| 10/10/1978 | US4119844 Phonograph cartridge and sensor assembly |
| 10/03/1978 | US4118287 Method for making a metal master for producing a gramophone record |
| 10/03/1978 | US4118039 Tonearm position setting apparatus |
| 10/03/1978 | US4118038 Vibration transmission mechanism for a phonograph |
| 10/03/1978 | US4118037 Record player |
| 09/19/1978 | US4114896 Phonographic pick-up cartridge |
| 09/19/1978 | US4114895 Phonograph tonearm pickup counterbalance |