| 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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| 10/09/1979 | US4170407 Sound film cassette employing separating web |
| 10/09/1979 | CA1064158A1 Self threading leader for a reel of tape |
| 10/09/1979 | CA1064157A1 Recording and/or playback apparatus and magazine for such an apparatus |
| 10/09/1979 | CA1064005A2 Tape cassette |
| 10/03/1979 | EP0004523A2 Case for cassette boxes |
| 10/02/1979 | CA1063725A1 Contaminant trapping in rotating disk devices |
| 10/02/1979 | CA1063720A1 Shim for cassette tapes and method of shaping the same |
| 10/02/1979 | CA1063536A1 Tape cassette case |
| 09/25/1979 | US4168811 Reel to retain a tape leader strip in wound position |
| 09/25/1979 | CA1063241A2 Carrier provided with a spiral structure in which sound and/or image information is stored |
| 09/18/1979 | US4168043 Tape cassette |
| 09/18/1979 | US4168040 Method of manufacturing and loading magnetic tape cassettes, particularly compact cassettes, and support for carrying out said method |
| 09/11/1979 | US4167269 Flexible record disk signal storage apparatus |
| 09/11/1979 | US4167256 Tape recorder/reproducer for selectably operating in reel-to-reel and cassette modes |
| 09/11/1979 | CA1062368A1 Apparatus for mounting and positioning magnetic recording heads |
| 09/11/1979 | CA1062367A1 Cassette tape recorders |
| 09/05/1979 | EP0003797A1 Processing device for an information unit recorded on a magnetic tape. |
| 09/04/1979 | US4166622 Centering collar for a disk hub |
| 09/04/1979 | US4166593 Cassette housing with integral tape guide |
| 09/04/1979 | CA1061900A1 Tape drive system |
| 09/04/1979 | CA1061899A2 Cassette and apparatus for recording and/or reproducing information |
| 09/04/1979 | CA1061615A2 Motion picture film cartridge |
| 08/22/1979 | EP0003653A1 Improvements relating to foils for tape cassettes |
| 08/21/1979 | US4165526 Magnetic tape cleaner |
| 08/21/1979 | US4165051 Tape reel |
| 08/14/1979 | US4164782 Locking mechanism for record package |
| 08/14/1979 | US4164768 Dual stage flow controller for self-ventilating disk pack |
| 08/14/1979 | US4164754 Method of manufacturing a die designed to duplicate a video frequency signal recording |
| 08/08/1979 | EP0003444A1 Method and apparatus for video signal recording |
| 08/08/1979 | EP0003346A1 Apparatus for smoothing the surface of record carrier tapes |
| 08/08/1979 | EP0003292A1 Magnetic tape cleaning device |
| 08/07/1979 | US4163533 Tape cassette |
| 08/07/1979 | CA1059886A1 Apparatus for automatically winding a magnetic tape |
| 07/31/1979 | US4163264 Noise improvement by capacitor bank in magnetic recording and playback apparatus |
| 07/31/1979 | US4162774 Belt drive cartridge |
| 07/31/1979 | CA1059622A1 Thermally stabilized enclosure for magnetic disk |
| 07/25/1979 | EP0003100A2 Ferrimagnetic iron oxide and method of manufacturing the same |
| 07/24/1979 | US4162183 Magnetic tape splicer |
| 07/24/1979 | US4162112 Storage assembly for a tape magazine |
| 07/24/1979 | US4162047 Hub for use in a tape casette |
| 07/24/1979 | US4162024 Container having slideable closure means |
| 07/24/1979 | US4162007 Magazine-lid combination for jacketed magnetic disks |
| 07/24/1979 | US4162006 Magnetic diskette magazine |
| 07/24/1979 | CA1059094A1 Support means for cassettes or cartridges for inked or filmed ribbons |
| 07/24/1979 | CA1059035A1 Miniature apparatus for reproducing sound from a stationary record |
| 07/24/1979 | CA1058998A1 Videodisc case |
| 07/17/1979 | CA1058749A1 Container for magnetic tape |
| 07/10/1979 | US4161007 Magnetic tape cassette apparatus |
| 07/10/1979 | CA1058138A1 Interbiased double tape spool assembly |
| 07/10/1979 | CA1058137A1 One piece core and platform for endless tape cartridges |
| 07/03/1979 | US4159811 Tape transport cartridge |
| 06/26/1979 | US4159494 Flexible disk in reversible cartridge |
| 06/26/1979 | US4159489 Magnetic record reproducing system |
| 06/26/1979 | CA1057396A1 Self-lubricating magnetic recording diskette |
| 06/19/1979 | US4158865 Automatic switching device for cassette tape recorder |
| 06/12/1979 | CA1056501A1 Tape cassette |
| 06/12/1979 | CA1056336A1 Rotatable cassette holder |
| 06/05/1979 | CA1056055A1 Storage system having a universal disk drive and a family of data modules |
| 06/05/1979 | CA1056054A1 Amplifier with howling-preventing circuit |
| 05/29/1979 | US4156751 Sheet material for forming envelopes used to protect electronic components |
| 05/29/1979 | US4156511 Tape cartridge |
| 05/22/1979 | US4156052 Polyisobutylene oligomer as lubricant |
| 05/22/1979 | US4155514 Continuous loop tape cartridge including rewind means |
| 05/22/1979 | CA1054999A1 Tape cassette |
| 05/15/1979 | US4155098 Groove depth estimation system using diffractive groove effects |
| 05/15/1979 | US4154886 Liner sheet containing a lubricant and an antistatic agent for magnetic tape cartridge and method for its production |
| 05/15/1979 | US4154344 Material for forming envelopes used to protect electronic components |
| 05/15/1979 | US4154341 Tape cassette case |
| 05/15/1979 | US4154338 Package for information carriers |
| 05/08/1979 | US4153257 Record stamper playback turntable |
| 05/08/1979 | CA1054123A1 Tape cassette with features for preventing the tape from moving up or downwardly relative to the cassette |
| 05/01/1979 | US4152740 Magnetic disc recorder and cassette |
| 05/01/1979 | US4152726 Record disk and method for producing the same with constant width groove |
| 04/24/1979 | USRE29976 Tape cartridge which is normally closed but is pivoted to open position when taken into use, and transport apparatus for such a cartridge |
| 04/24/1979 | US4151591 Transverse track magnetic transducing heads |
| 04/24/1979 | US4151572 Sound recording and reproducing apparatus, and record containing case and recording medium |
| 04/24/1979 | US4150773 Guide roller construction for magnetic tape recording/reproducing systems, and especially for video tape systems |
| 04/17/1979 | US4150409 Channel repeat attachment |
| 04/17/1979 | US4150398 Linear method of optically recording a video or other signal |
| 04/17/1979 | US4150261 Method of and system for priority transcribing of dictation |
| 04/17/1979 | US4149729 Disc caddy and disc player system therefor |
| 04/10/1979 | US4149207 Cartridge and flexible magnetic disk assembly |
| 04/10/1979 | US4148644 Light-sensitive silver halide photographic materials |
| 04/10/1979 | US4148443 Tape cartridge |
| 04/10/1979 | CA1052467A1 Cassette and apparatus for recording and/or reproducing information |
| 04/10/1979 | CA1052355A1 Magnetic tape cartridge, more particularly a miniature cartridge |
| 04/03/1979 | US4148067 Modulated groove records with a thick metal layer and method for making same |
| 04/03/1979 | CA1051837A1 Cassette case |
| 03/27/1979 | US4146194 Floating roller tape cartridge |
| 03/27/1979 | US4146193 Flexible tape receiving and storage container |
| 03/27/1979 | US4146031 Leader or trailer for a magnetic tape |
| 03/27/1979 | CA1051354A1 Apparatus for inhibiting a plurality of disc records from being disposed on a turntable and grounding a disc record disposed on the turntable |
| 03/21/1979 | EP0001143A1 Storage case for magnetic band cassette |
| 03/20/1979 | US4145726 Video record package |
| 03/20/1979 | US4145718 Video disc pickup with preplay stylus |
| 03/20/1979 | US4145169 Record disc dewarping device |
| 03/13/1979 | US4144542 Audio-visual reproduction device |
| 03/13/1979 | US4144300 Photoresists |
| 03/13/1979 | CA1050497A1 Tape cassette hub retainers |
| 03/13/1979 | CA1050406A1 Laminate and a method for manufacturing the same |