| 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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| 06/19/1984 | US4455637 Disc record player with automatic loading/unloading assembly |
| 06/19/1984 | US4455636 Record cleaning device |
| 06/19/1984 | US4455633 Method for evaluating distortions in video disc recordings |
| 06/19/1984 | US4455632 Apparatus for optically reading a record carrier with two types of information areas |
| 06/05/1984 | US4453245 Apparatus for detecting position of a reproducing transducer in a rotary recording medium reproducing apparatus |
| 06/05/1984 | US4453244 Record player with spring-assisted pick-up arm return |
| 06/05/1984 | US4453243 Linear tracking arm drive apparatus |
| 06/05/1984 | US4453242 Surface acoustic wave cutterhead for disc recording having a circular transducer |
| 06/05/1984 | US4452819 Disc coating method |
| 06/05/1984 | US4452748 Process for obtaining a copy disk from an original recording carried by a matrix |
| 05/29/1984 | CA1168008A1 Hot sprue assembly for an injection molding machine |
| 05/22/1984 | US4450551 Keel-tipped stylus, and method and device for making keel-tipped stylus |
| 05/22/1984 | US4450548 Disc record player having stylus cleaner |
| 05/22/1984 | US4449916 Device for manufacturing information recording mediums |
| 05/15/1984 | US4449216 Pickup arm device |
| 05/15/1984 | US4449214 Record cleaning mechanism |
| 05/15/1984 | CA1167567A1 Piezoelectric transducer for recording video information |
| 05/15/1984 | CA1167566A1 Video disc player having carriage drive apparatus |
| 05/08/1984 | US4447898 Simplified sound reproducing device driven by a spring motor |
| 05/01/1984 | US4446547 Record cleaning device |
| 04/25/1984 | EP0106641A1 Polymerizable composition for information carrying systems |
| 04/24/1984 | US4445210 Tone arm mechanism for a record player |
| 04/24/1984 | US4445144 Method for detecting eccentricity in a video disc and in a video disc player |
| 04/24/1984 | US4444849 Iron-chromium-nickel alloy layer |
| 04/17/1984 | US4443871 Stylus lowering, lifting and cleaning apparatus |
| 04/10/1984 | US4442517 Stylus protecting mechanism for video disc player |
| 04/03/1984 | US4441177 Stylus protection mechanism |
| 04/03/1984 | US4441176 Damping mechanism for a video disc stylus holder |
| 04/03/1984 | CA1164807A1 Web cleaning apparatus |
| 04/03/1984 | CA1164651A1 Audio-visual teaching apparatus |
| 03/28/1984 | EP0103935A1 Method and device for balancing circular plate-shaped objects |
| 03/27/1984 | US4439132 Hot sprue assembly for an injection molding machine |
| 03/27/1984 | CA1164557A1 Carriage alignment apparatus for video disc player |
| 03/27/1984 | CA1164169A1 Drying process for video discs |
| 03/14/1984 | EP0102608A2 Expansion circuit for digital signals |
| 03/13/1984 | US4437181 Automatic record playing apparatus having a tone arm position detecting device |
| 03/13/1984 | US4437180 Apparatus for controlling pickup arm in record or video disk player |
| 03/13/1984 | US4437179 Phono pickup cartridge |
| 03/13/1984 | US4436683 Method for fabricating an information signal recorded medium of the electrostatic capacity type |
| 03/06/1984 | USRE31533 Polyacryloyloxyalkyl heterocycle polymer |
| 03/06/1984 | US4435802 Synthetic resin material, particularly surface material for phonograph records with a photograph or picture |
| 03/06/1984 | US4435800 Automatic record player |
| 03/06/1984 | US4435798 Method and apparatus for cleaning disks containing encoded information |
| 03/06/1984 | US4435343 Method for manufacturing an information memory disk |
| 03/06/1984 | CA1163366A1 Disc player having disc stabilizing apparatus |
| 03/06/1984 | CA1163063A1 Method of and apparatus for manufacturing a disc- shaped plastics record carrier |
| 02/28/1984 | US4434484 Stabilizer for record discs |
| 02/28/1984 | US4434483 Tone arm |
| 02/28/1984 | US4434482 In a warp-compensating system |
| 02/28/1984 | US4434481 Traveling wave surface acoustic wave transducer |
| 02/28/1984 | US4433604 Frequency domain digital encoding technique for musical signals |
| 02/21/1984 | US4433423 High quality delta modulator |
| 02/21/1984 | US4433409 Pick-up assembly for video disc player |
| 02/21/1984 | US4433408 Cantilever for pickup cartridge |
| 02/21/1984 | US4433407 Method and apparatus for recording video signals into a metal substrate |
| 02/21/1984 | US4433404 Variety playing sound reproducing device |
| 02/21/1984 | CA1162488A1 Record playing apparatus |
| 02/21/1984 | CA1162487A1 Record player program selector |
| 02/21/1984 | CA1162486A1 Record changer |
| 02/21/1984 | CA1162485A1 Automatic eject apparatus for a self-contained record player |
| 02/16/1984 | WO1984000503A1 Talking figure play set |
| 02/07/1984 | US4429678 Cutting stylus for mechanically cutting masters for keel-lapping |
| 02/07/1984 | CA1161953A1 Grooved label for video disc |
| 02/07/1984 | CA1161952A1 Carriage reset apparatus for disc record player |
| 02/07/1984 | CA1161948A1 Spindle retracting mechanism for disc record player |
| 01/31/1984 | US4429381 Sound reproducing device |
| 01/31/1984 | US4429380 Braking device for a pickup arm of a disk player or the like |
| 01/31/1984 | US4429379 Device for controlling tone arm carrying moving coil type pickup |
| 01/31/1984 | US4429376 Video disc stylus deflector system |
| 01/24/1984 | US4427353 Upright injection-compression pressing machine for the manufacture of information carrier discs |
| 01/17/1984 | US4426660 Stylus for detecting signals recorded as geometric variations and method for making the same |
| 01/10/1984 | US4424761 Nozzle for coating a disc with a lubricant |
| 01/03/1984 | US4424583 Pickup cartridge having a ribbed cantilever |
| 12/27/1983 | US4423504 Height position adjusting device for a reproducing transducer in a rotary recording medium reproducing apparatus |
| 12/27/1983 | US4423503 Magnetically recordable label for mechanically-defined information bearing discs |
| 12/27/1983 | US4423501 Phonograph tone arm suspension |
| 12/27/1983 | US4423499 Pickup adjusting equipment |
| 12/27/1983 | CA1159559A1 Rotary recording medium reproducing apparatus capable of performing automatic search reproduction |
| 12/27/1983 | CA1159558A1 Apparatus for detecting position of a reproducing transducer in a rotary recording medium reproducing apparatus |
| 12/07/1983 | EP0095886A2 Method and apparatus for making a stamping master for video disc replication |
| 11/29/1983 | US4418408 Stylus arm for video disc player |
| 11/29/1983 | CA1157608A1 Device for molding information-carrying disks |
| 11/23/1983 | EP0094671A2 Method for data transmission |
| 11/22/1983 | CA1157382A1 High fidelity stereophonic reproduction system |
| 11/15/1983 | US4416006 Record disc playing apparatus having the function for correcting rotational irregularities due to record disc eccentricity |
| 11/15/1983 | US4416005 Stylus for tracking a stereophonic or quadraphonic sound groove |
| 11/15/1983 | US4416003 Both side record player |
| 11/01/1983 | US4413334 Pickup arm with servo-controlled stylus |
| 11/01/1983 | US4413292 Rotary recording medium reproducing apparatus capable of performing automatic search reproduction |
| 11/01/1983 | CA1156366A1 Flylead for a video disc pickup stylus |
| 11/01/1983 | CA1156360A1 Video disc apparatus for clearing foreign matter from the signal pickup stylus during playback |
| 10/25/1983 | US4412321 Record changer |
| 10/25/1983 | US4412319 Video disc player with self calibrating stylus translator |
| 10/25/1983 | US4412318 Device for detecting interband gaps on record medium |
| 10/18/1983 | US4410978 Cured di- or triacrylate layer |
| 10/18/1983 | US4410976 Signal pickup device in a rotary recording medium reproducing apparatus |
| 10/18/1983 | US4410975 Stereophonic pick-up cartridge |
| 10/18/1983 | US4410970 Method and apparatus for measuring and analyzing sound characteristics of record discs |
| 10/18/1983 | US4410784 Method for modifying surface properties of a disc-like shaped article of a vinyl chloride-based resin |
| 10/18/1983 | US4410748 High density information disc lubricants |