| Patents for G11B 23 - Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus (25,121) |
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| 05/10/1983 | US4382522 Tape cover of magnetic tape cassette and process for preparing tape cover |
| 05/10/1983 | CA1146271A1 Removable disc media |
| 05/10/1983 | CA1146270A2 Endless type tape cassette |
| 05/10/1983 | CA1146267A1 Cassette tape position indicator |
| 05/04/1983 | EP0078086A1 Magnetic-tape cassette |
| 05/04/1983 | EP0077876A1 Minicassette |
| 05/03/1983 | US4382103 Master for device replication |
| 05/03/1983 | US4381836 Anti-theft point-of-sale container |
| 05/03/1983 | CA1145844A1 Optical recording medium and method of use thereof |
| 04/28/1983 | WO1983001527A1 Magnetic disc drive cleaning method |
| 04/27/1983 | EP0077566A1 Disc cassette (disc cartridge) |
| 04/26/1983 | US4381559 Disc-shaped recording medium reproducing apparatus |
| 04/26/1983 | US4381528 Enclosed-type magnetic disc recording and/or reproducing apparatus |
| 04/26/1983 | CA1145464A1 Programmed video record disc and related playback apparatus |
| 04/26/1983 | CA1145461A1 Hard fixed disc drive assembly and read-write head actuator |
| 04/20/1983 | EP0077019A1 Storage case for high-density information discs |
| 04/19/1983 | US4380780 Disc-shaped recording medium reproducing apparatus |
| 04/19/1983 | CA1145037A1 Tape cassette brake assembly |
| 04/19/1983 | CA1145035A1 Magnetic tape cassettes provided with memory circuits for storing information |
| 04/19/1983 | CA1144904A1 Integral foldable package |
| 04/14/1983 | WO1983001212A1 Tape cleaning apparatus |
| 04/13/1983 | EP0076518A2 Record disc reproducing apparatus |
| 04/13/1983 | EP0076307A1 Lockout device for tape cassette |
| 04/12/1983 | US4380035 Magnetic tape cassette |
| 04/12/1983 | US4380032 Tape system with optically contrasting data marks |
| 04/12/1983 | US4380030 Magnetic tape cassette |
| 04/12/1983 | US4380015 Recording system for recording information on record medium by using energy beam |
| 04/12/1983 | US4379507 Optical disk cassette |
| 04/12/1983 | CA1144643A1 Magnetic card recording and/or reproducing apparatus |
| 04/06/1983 | EP0076205A1 Magnetic tape cassette with elastic tension strip |
| 04/06/1983 | EP0076064A1 Improved removable disk cartridge |
| 04/05/1983 | US4378610 Device for removing impurities from data carriers |
| 04/05/1983 | CA1144276A1 Video player/recorder cleaning apparatus and method |
| 03/30/1983 | EP0075301A1 Protection envelope for a disk-shaped audio and/or video signal record carrier with antistatic action |
| 03/29/1983 | US4378582 Demagnetizing apparatus |
| 03/29/1983 | US4378576 Removable disc media |
| 03/29/1983 | US4378575 Tape cassette device |
| 03/29/1983 | US4378066 Case for holding magnetic tape cassette |
| 03/29/1983 | CA1143665A1 Control of relative humidity in machine enclosures |
| 03/23/1983 | EP0074833A2 Floppy disc envelope container |
| 03/23/1983 | EP0074476A1 Web threading apparatus |
| 03/23/1983 | EP0057178A4 A method for recording track marking information on flexible magnetical information carrier discs and apparatus for fine adjustment of the position of a reading head. |
| 03/22/1983 | US4377831 Non-abrasive magnetic head cleaning system |
| 03/22/1983 | US4377830 Combination magnetic disk storage device and filter system |
| 03/22/1983 | US4377251 Variable geometry vacuum column |
| 03/22/1983 | US4377233 Record and tape storage unit |
| 03/22/1983 | US4377111 Cassette stacking device |
| 03/22/1983 | CA1143474A1 Disc-shaped optically readable record carrier used as a data storage medium |
| 03/22/1983 | CA1143143A1 Production of ferrimagnetic iron oxide |
| 03/16/1983 | EP0074158A2 Data-bearing masters for replication |
| 03/16/1983 | EP0074033A2 Tape guiding device for magnetic tapes, particularly magnetic video tapes, magnetic tape cassettes with such a tape guiding device and tape guiding elements therefor |
| 03/16/1983 | EP0074032A2 Magnetic tape device with at least one tape guiding element, and magnetic tape cassette with such a magnetic tape device |
| 03/15/1983 | US4376960 Flexible disk stabilizing structure |
| 03/15/1983 | US4376519 Lubricant sheet for magnetic tape cassette |
| 03/15/1983 | CA1142989A1 Drawer unit fo storing cases normally containing magnetic tape cassettes |
| 03/08/1983 | US4375850 System for display and storage of cassettes |
| 03/03/1983 | WO1983000768A1 Support-plate for a sound tape cassette intended to be preserved in a casing |
| 03/02/1983 | EP0073010A2 Tape cassette, particularly a magnetic-tape cassette with viewing windows |
| 03/01/1983 | US4375658 Cleaning disk |
| 03/01/1983 | CA1142257A1 Tape cassette device |
| 03/01/1983 | CA1142256A1 Disc centering |
| 02/23/1983 | EP0072517A2 Reel for video cassettes |
| 02/22/1983 | US4375101 System for formatting data on video tape for high accuracy recovery |
| 02/22/1983 | CA1141736A1 Cassette |
| 02/16/1983 | EP0072017A1 Methacrylate resin composition for optical information recording medium |
| 02/16/1983 | EP0071996A2 Magnetic recording tape cartridge |
| 02/16/1983 | EP0071753A2 Apparatus for accurately imaging information on a film by acharged particle beam |
| 02/16/1983 | EP0071649A1 Blank plate for video cassette packaging case |
| 02/16/1983 | EP0064979A4 Diskette filing and storage container. |
| 02/15/1983 | US4374404 Non-abrasive magnetic head cleaning system |
| 02/15/1983 | US4374323 Focusing apparatus for use in a system for recovering information from an optically-readable storage medium |
| 02/15/1983 | US4374077 Photopolymerization of a deaerated bead spread between a patterned surface and a bondable surface; television; audio devices |
| 02/15/1983 | CA1141462A1 Optically readable information disc |
| 02/15/1983 | CA1141356A1 Tape cartridge assembly and tape transport apparatus for use therewith |
| 02/08/1983 | US4372504 Magnetic record tape protective device for a tape cassette |
| 02/08/1983 | US4372503 Flexible tape control apparatus |
| 02/03/1983 | WO1983000395A1 Diffractive subtractive color filter responsive to angle of incidence of polychromatic illuminating light |
| 02/01/1983 | US4371286 Tapping boss of magnetic tape cassette |
| 02/01/1983 | US4371131 Magnetic tape cassette |
| 02/01/1983 | US4371123 Tape reel |
| 02/01/1983 | CA1140674A1 Magnetic diskette magazine |
| 01/26/1983 | EP0070616A1 Improved cassette hub locking mechanism |
| 01/25/1983 | US4370740 Rotary recording medium |
| 01/25/1983 | US4370738 Video disc player having record retaining mechanism |
| 01/25/1983 | US4370688 Floppy pack with enhanced orifice means |
| 01/25/1983 | US4370035 Dual web sound movie cassette with emulsion stripping web |
| 01/25/1983 | US4369935 Tape cassette and tape transport mechanism |
| 01/25/1983 | US4369883 Tape cassette storage and carrying case |
| 01/25/1983 | CA1140261A1 Information carrying discs |
| 01/25/1983 | CA1140258A1 Magnetic tape drive system |
| 01/19/1983 | EP0070090A1 Extended play cassette |
| 01/19/1983 | EP0070031A2 High density optically readable disc-type information carrier |
| 01/18/1983 | US4369475 Enclosed disc drive with improved air flow |
| 01/18/1983 | US4368934 Storage cabinet for cassettes boxes |
| 01/18/1983 | US4368860 Magnetic recording tape cassette |
| 01/18/1983 | US4368636 System for handling a volatile and flammable liquid |
| 01/12/1983 | EP0069672A1 Stackable packaging trays and stack formed by such trays |
| 01/12/1983 | EP0069545A2 Disc recorder with integral cartridge tape module |
| 01/12/1983 | EP0069218A1 Magnetic recording disk cartridge |
| 01/11/1983 | US4368497 Tape cassette |