| 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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| 09/19/1978 | US4114894 Device for cancelling inside force of pickup arm of record player |
| 09/19/1978 | US4114893 Gramophone equipment |
| 09/19/1978 | CA1038775A1 Device in an automatic record player or a record changer for the combined adjustment of the turntable speed and the pick-up lowering position |
| 09/12/1978 | US4113897 Smooth groove formation method employing spin coating of negative replica of inscribed disc |
| 09/12/1978 | US4113267 Double stylus assembly for phonograph record stamper playback |
| 09/12/1978 | US4113266 Playback stylus for phonograph record stamper |
| 09/12/1978 | US4113265 Tone pickup arm device keeping excellent dynamic lateral balance and damping effect |
| 09/12/1978 | US4113264 Phonograph record player |
| 09/12/1978 | US4113263 Phonograph record player |
| 09/12/1978 | CA1038301A1 Turntable assembly for phonograph records |
| 09/12/1978 | CA1038300A1 Phonograph pickup cartridge |
| 09/05/1978 | US4112030 Method and system for the production of sheet or platter shaped information carriers |
| 09/05/1978 | US4111433 Tone arm control system |
| 09/05/1978 | US4111432 Automatic device for positioning the tone arm of a record player |
| 09/05/1978 | US4111430 Hand held record player with record holding attachment |
| 08/29/1978 | US4110784 Noise reduction apparatus |
| 08/29/1978 | CA1037385A1 Inside force cancelling device for tone arm of record player |
| 08/22/1978 | US4109114 Programmable phonograph device |
| 08/22/1978 | US4108445 Phonograph record player |
| 08/22/1978 | US4108444 Phonograph record player |
| 08/15/1978 | USRE29730 Automatic record player |
| 08/15/1978 | US4107489 Switch mechanism for simple phonograph |
| 08/15/1978 | US4106775 Phonograph record player |
| 08/08/1978 | US4105961 Phonograph pick-up arm control arrangement |
| 08/08/1978 | US4105213 Device for cutting a sound groove on a disc recording medium |
| 08/08/1978 | US4105212 Reproducing stylus for phonograph records |
| 08/08/1978 | US4104832 Method for forming keel-tipped stylus for video disc systems |
| 07/25/1978 | US4102536 Phonograph pickup device |
| 07/25/1978 | US4101999 Battery operated device for cleaning phonograph records and the like |
| 07/18/1978 | US4101945 Drive spindle assembly for disc file |
| 07/18/1978 | US4101942 Track following servo system and track following code |
| 07/18/1978 | US4101135 Sound reproducing unit |
| 07/18/1978 | US4101134 Sound reproducing unit tone arm |
| 07/18/1978 | US4101133 Pickup tone arm |
| 07/11/1978 | US4099724 Automatic disc wiping apparatus |
| 07/04/1978 | US4098512 Phonograph record player |
| 07/04/1978 | US4098030 Method for forming a narrowed-electrode pickup stylus for video disc systems |
| 06/27/1978 | US4097899 Video record player switching system |
| 06/20/1978 | US4096079 Halogenated solvent, tetrafluoroethylene telomer, antistatic agent |
| 06/20/1978 | US4095802 Arm record cleaner |
| 06/06/1978 | US4093833 Moving coil cartridge with magnetic means to affix stylus holder to cartridge casing |
| 06/06/1978 | US4093832 Programmable record changer |
| 05/30/1978 | US4092062 Signal device for electro-acoustic reproducing equipment |
| 05/30/1978 | US4092030 An apparatus using a pivoted weight mechanism for lifting the tone arm of a record player |
| 05/23/1978 | US4090718 Button-shaped toy record player |
| 05/16/1978 | US4089530 Phonographic stylus |
| 05/09/1978 | US4088617 Phonographic record molding composition |
| 05/02/1978 | US4087842 Recording track eccentricity compensation method and means |
| 05/02/1978 | US4087096 Pick-up arm positioning mechanism for an automatic record player |
| 05/02/1978 | US4087095 Pneumatic record player |
| 04/25/1978 | US4086617 Video disc player mechanism control system |
| 04/25/1978 | US4085940 Phonograph record player |
| 04/25/1978 | US4085939 Reworking of a playback or recording member guide body |
| 04/18/1978 | US4084824 Device to assist in holding a playing record to clean the same and the method of using the same |
| 04/18/1978 | US4084540 Apparatus for applying lubricating and protective film to phonograph records |
| 04/18/1978 | US4084286 Self-moistening cleaning device |
| 04/11/1978 | US4083565 Device for correcting offset angle of pickup arm in tracking pickup apparatus |
| 04/11/1978 | US4083073 Devices for neutralizing electrostatic charges and removing dust and particles from recording discs and the like |
| 04/04/1978 | US4082294 Cleaning and static-removing device for gramophone records |
| 04/04/1978 | US4082292 Tone arm lift mechanism |
| 04/04/1978 | US4082291 Pick-up arm assemblies for record players |
| 04/04/1978 | US4082290 Automatic record player mechanism for turntable speed and pick-up arm position adjustment |
| 04/04/1978 | US4082260 Adjustable apparatus for separating an outermost label from a stack of labels |
| 04/04/1978 | US4082213 Method of mounting a particle on a support member |
| 03/21/1978 | US4079944 Cueing device for phonographs |
| 03/21/1978 | US4079943 Pickup arm device dynamically damped |
| 03/14/1978 | US4079330 System for demodulating angle-modulated signals |
| 03/14/1978 | US4079261 Detector for distinguishing between recorded and unrecorded bands of a phonograph record |
| 03/14/1978 | US4078808 Dual record toy phonograph |
| 03/14/1978 | US4078807 Phonograph record player |
| 03/07/1978 | US4077635 Device for selectively positioning the arm of a record player |
| 02/28/1978 | US4077050 Video disc player employing a spring loaded stylus apparatus |
| 02/28/1978 | US4076969 Impulse noise reduction system |
| 02/28/1978 | US4076258 Disc-record players |
| 02/28/1978 | US4076257 Apparatus for supporting phonographic tone arms |
| 02/28/1978 | US4076256 Stylus shift mechanism for a phonograph having two concentric records |
| 02/14/1978 | US4073496 Phonograph device |
| 02/14/1978 | US4073495 Advancement of stuck phonograph needles |
| 01/31/1978 | US4071490 Polyvinyl chloride |
| 01/31/1978 | US4071460 For phonograph record surfaces |
| 01/24/1978 | US4070552 Multi-directional stereo multiple recording apparatus with constant acceleration cutting |
| 01/24/1978 | US4070028 Cleansing of contaminants from gramophone records |
| 01/17/1978 | US4069503 Apparatus for recording and reproducing signals using a disc-like recording medium |
| 01/17/1978 | US4069484 Defect plotting system |
| 01/17/1978 | US4068850 Stylus unit for pick-ups and/or cutters |
| 01/10/1978 | US4067582 Stylus suspension |
| 01/03/1978 | US4066972 System for demodulating angle-modulated signals |
| 01/03/1978 | US4066267 Knife-edge bearing system |
| 01/03/1978 | US4066266 Attitude control device |
| 12/27/1977 | US4065188 Linear bearing for parallel tracking arm |
| 12/27/1977 | US4065134 Needle assemblies for phonograph pickup cartridges |
| 12/13/1977 | US4063285 Pickup device with a composite compliance arm |
| 12/13/1977 | US4062548 Pickup arm lifting device |
| 12/06/1977 | US4061343 Vibration transmission mechanism for a phonograph |
| 12/06/1977 | US4061342 Tone arms |
| 11/29/1977 | US4060831 Wideband electromechanical recording system |
| 11/29/1977 | US4060471 Composite sputtering method |
| 11/22/1977 | US4059277 Stylus arm lifting/lowering apparatus for a video disc player system |
| 11/01/1977 | US4056457 Method of depositing low stress hafnium thin films |
| 10/25/1977 | US4055351 Resettable toy phonograph |