| 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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| 10/04/1994 | CA1332211C Volume phase reflection holograms and methods for fabricating them |
| 09/07/1994 | CN1025898C Apparatus for playing of gramophone record which is started by vibration |
| 07/12/1994 | US5329122 Information processing apparatus and scanning tunnel microscope |
| 07/06/1994 | EP0605025A1 Injection moulding or injection-compression moulding machine |
| 06/28/1994 | US5324188 Roller stamper for molding a substrate sheet to become an information recording medium |
| 06/01/1994 | EP0599406A1 Injection moulding or injection compression moulding machine |
| 06/01/1994 | DE4239776A1 Injection or injection compression machine for prodn. of information=carrying discs - has two or more adjacent tools each supplied with polymer from separate injection units |
| 03/22/1994 | US5297133 Optical disc cartridge and mechanism for preventing an incorrect insertion of a cartridge |
| 12/08/1993 | CN2149003Y Cleaner for cleaning laser gramophone disc laser pickup head |
| 12/01/1993 | CN2148380Y Full-automatic microcomputerized linear tracing stereophonic electric gramophone |
| 11/16/1993 | US5262981 Storage of information units in the nanometer range |
| 09/29/1993 | EP0562152A1 Magnetic disk substrate of titanium |
| 09/21/1993 | US5247511 Compact sound record playing apparatus |
| 07/13/1993 | US5228023 Turntable assembly, method of manufacturing a turntable assembly, and disc player comprising a turntable assembly |
| 06/09/1993 | CN1021159C Simplified acoustic playback apparatus |
| 05/26/1993 | EP0543036A1 phonographic reproduction apparatus with means for selecting the groove of the record to be reproduced, particularly for toys and the like |
| 05/26/1993 | CN1020976C Method and device for sub-micron processing surface |
| 05/19/1993 | DE4137938A1 Scanner for signals on rotary disc concentric tracks - has scanning head guide along logarithmic spiral, starting in rotation centre. |
| 03/03/1993 | EP0529616A2 Information processing apparatus and scanning tunnel microscope |
| 03/03/1993 | CN1020006C Thin-thickness type recording disk reproducing apparatus |
| 01/05/1993 | US5177733 Sound recording playing apparatus with improved vibration plate |
| 01/05/1993 | US5177506 Process for forming image on novel recording medium |
| 12/29/1992 | US5175724 Capacitance disc information retrieval system |
| 12/24/1992 | DE4120691A1 Guide to tangential tone arm of record player - has tone arm support linked to coupler via parallelogram linkage |
| 12/09/1992 | CN1019427B Manual simplified acoustic playback apparatus |
| 12/09/1992 | CN1019426B Pull string mechanism for pull string loud-speakers device |
| 12/02/1992 | CN1019338B Disk record reproducing apparatus |
| 11/17/1992 | US5164927 Sound reproducing apparatus |
| 11/05/1992 | DE4214332A1 Drive system for moving pick=up of record player - has spindle motor carriage and head carriage mechanically coupled such that speed of head relative to disc is increased |
| 10/19/1992 | CA2063972A1 Method and apparatus for determining a quantizing factor for multi-generation data compression/decompression processes |
| 10/14/1992 | CN1018679B Improved record player |
| 08/11/1992 | US5138602 Sound record playing apparatus having shock responsive weight member to actuate the same |
| 07/28/1992 | US5133824 Method and device for removing a flexible product from a carrier plate |
| 04/28/1992 | US5109371 Manual simplified acoustic playback apparatus |
| 04/07/1992 | US5103442 Simplified acoustic playback apparatus |
| 04/07/1992 | US5102608 Method for the manufacture of objects from polycarbonate |
| 03/03/1992 | US5092758 Disc molding apparatus |
| 01/14/1992 | CA1294095C Method of making cards, in particular memory cards |
| 01/08/1992 | EP0464536A2 Method for storage of information units in nanometre range |
| 01/04/1992 | CA2046063A1 Storage of information units in the nanometer range |
| 11/13/1991 | CN1056181A Shock-start type recording disk reproducing apparatus |
| 11/13/1991 | CN1056180A Thin-thickness type recording disk reproducing apparatus |
| 10/30/1991 | CN1014559B Improved record player |
| 10/02/1991 | EP0449462A2 Roll stamper for moulding substrate sheet for information recording mediums, procedure for preparation of the same, and procedure for producing substrate sheets for information recording mediums |
| 10/01/1991 | US5054012 Sound reproducing device for playing a record disc having a plurality of recorded grooves |
| 09/18/1991 | CN1014010B Record disc replacing means for a selective playing type sound reproducing device |
| 09/17/1991 | US5050154 Optical recording/reproducing module having reduced size |
| 08/28/1991 | CN1054143A Disk record reproducing apparatus |
| 08/14/1991 | CN1013526B Simplified sound reproducing device capable of carring and reproducing a plurality of record discs |
| 08/07/1991 | EP0439870A1 Method for the manufacture of carriers for optically readable information from polycarbonate |
| 08/06/1991 | US5038322 Method of and device for sub-micron processing a surface |
| 07/31/1991 | CN1013418B Record disc replacing means for selective playing type sound reproducing |
| 07/04/1991 | CA2033470A1 Method for the manufacture of objects from polycarbonate |
| 06/19/1991 | EP0432832A1 Method and device for removing a flexible product from a carrier plate |
| 05/14/1991 | US5015338 Method of manufacturing a stamper for formation of optical information carrying disk |
| 05/08/1991 | EP0426129A2 Injection compression molding method for compact discs or the like |
| 04/02/1991 | US5004660 Electroless deposition of metal layer to polysulfone |
| 03/27/1991 | CN1012229B Positioning transportation tape for positioning reproducing many of disc records and simple gramophone |
| 03/26/1991 | US5003522 Disc reproducing system for compensating mechanical imperfections |
| 03/13/1991 | EP0233207B1 Stopping system for record-player |
| 02/27/1991 | CN2072262U Apparatus for adjusting speed of electric turntable |
| 02/26/1991 | US4995799 Optical disc manufacturing apparatus |
| 02/20/1991 | CN2071820U Playback additional device for tape recorder |
| 02/13/1991 | CN1011639B Simplified sound reproducing device having means for preventing collision between reproducing stylus and record disc |
| 01/30/1991 | CN2070491U Gramophone rotary plate pad structure |
| 01/30/1991 | CN2070490U Rotary sound pick-up photoeletric automatic stop gramophone |
| 01/23/1991 | CN1011360B Reproducing apparatus of multipletrack disc records |
| 11/21/1990 | CN2066177U Thick film stereo microgroove record |
| 11/20/1990 | US4972402 Optical card |
| 11/20/1990 | US4971548 Injection molding halves for disks |
| 11/14/1990 | CN1010438B Recorder for reproducing disc record with mutiple output tracks |
| 10/17/1990 | CN2064094U Stop mechanism of rotary disc of gramophone |
| 10/09/1990 | US4962493 Record carrier with a follow-on track and apparatus for recording information thereon |
| 09/04/1990 | US4954065 Master disk |
| 08/14/1990 | US4947505 Apparatus for cleaning a record disc |
| 06/13/1990 | EP0372638A1 Turntable assembly, method of manufacturing a turntable assembly, and disc player comprising a turntable assembly |
| 05/16/1990 | CN1042261A Simplified acoustic playback apparatus |
| 05/01/1990 | US4922476 Playing method for disk player |
| 04/24/1990 | US4919104 Reciprocating machine |
| 04/18/1990 | CN1041468A Method and device for sub-micron processing surface |
| 04/17/1990 | US4918678 Disc reproducing system for compensating mechanical imperfections |
| 03/28/1990 | EP0360337A2 Method of and device for sub-micron processing a surface |
| 03/14/1990 | CN2054557U Electronic device for phonograph halfway pickup-returning |
| 02/28/1990 | EP0355925A1 A method of making a carrier with optically readable, digitable information |
| 02/06/1990 | US4899329 Optically readable disc with a centering member fixed to a transparent substrate |
| 02/06/1990 | CA1265394A1 Free surface casting method |
| 01/16/1990 | US4894260 Electroless plating method and apparatus |
| 01/03/1990 | CN1038533A Turntable basement adaptable to automatic stop and reset devices |
| 12/19/1989 | US4888260 Stepped surface relief structures |
| 11/15/1989 | CN2047826U Play attachment of pocket radio set |
| 11/14/1989 | US4881133 Arrangement for the recording of an information signal |
| 10/24/1989 | US4876678 Sound reproducing device for playing a record disc having a plurality of recorded grooves |
| 10/04/1989 | CN1036094A Reproducing apparatus of multipletrack disc records |
| 09/28/1989 | DE3808134A1 Mounting for a cutting and embossing stylus |
| 09/26/1989 | CA1261280A1 Apparatus for cleaning a record disc |
| 08/29/1989 | US4862444 Index carrier for indexing and reproducing a plurality of record discs and a simplified sound reproducing device incorporating thereof |
| 08/29/1989 | US4861437 Method of manfacturing a mould and providing it with a backing and mould manufactured according to the invention |
| 08/08/1989 | US4855989 Stylus |
| 06/20/1989 | US4841506 Random playing method for disk player |
| 05/30/1989 | US4834843 Transfer molding |