| 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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| 01/04/1977 | US4001891 Direct individual program readout of eight-track tape cartridge |
| 01/04/1977 | US4001493 Single lens, multi-beam system and method for high resolution recording of information on a moving recording medium and article |
| 12/28/1976 | US4000519 Cassette and apparatus for tape recordings on both tape sides |
| 12/28/1976 | US4000232 Venting, pressurized gas |
| 12/28/1976 | US3999818 Modular storage system |
| 12/28/1976 | US3999725 Device for transferring magnetic recording tape from one hub to another in a tape cassette |
| 12/28/1976 | US3999719 Reverse mechanism for tape cartridges |
| 12/21/1976 | US3998401 Tape reel with tape-attaching mechanism |
| 12/21/1976 | US3998324 Tape cassette hub retainers |
| 12/14/1976 | US3997919 Cartridge tape machine cleaner apparatus |
| 12/14/1976 | US3997914 Analog encoder decoder circuit |
| 12/14/1976 | US3997123 Automatic cassette loading machine |
| 12/07/1976 | US3995921 Holders for the storage of tape cassettes |
| 12/07/1976 | US3995790 Cassette for tape-shaped record carriers |
| 12/07/1976 | US3995737 Holders for tape cassettes |
| 11/30/1976 | US3995319 Tape recorder cassette adapted to indicate the number of times the tape is played |
| 11/30/1976 | US3995316 Or reproducing apparatus, and record assembly for use therein |
| 11/30/1976 | US3994551 Holders for tape cassettes |
| 11/30/1976 | US3994550 Holders for tape cassettes |
| 11/23/1976 | USRE29049 Tape recorder and magnetic tape cassette with movable tensioning and brake means |
| 11/23/1976 | US3993262 Tape spool |
| 11/16/1976 | US3991956 Tape cassette |
| 11/09/1976 | US3991283 Multichannel record disc reproducing system |
| 11/09/1976 | US3990733 Hub for magnetic tape |
| 11/09/1976 | US3990575 Cassette container lock mechanism |
| 11/09/1976 | US3990574 Tape cassette hub retainers |
| 11/02/1976 | US3990108 Magnetic tape speed control system |
| 10/26/1976 | US3988532 Arrangement for compensating duty factor variations in an optical video disc |
| 10/26/1976 | US3988531 System for compensating for incorrect duty factor when reading out information stored in a video disc |
| 10/26/1976 | US3987975 Magnetic tape reel with stop means |
| 10/26/1976 | US3987900 Jacket for magnetic disc memory |
| 10/19/1976 | US3987489 Tape cartridge which is normally closed but is pivoted to open position when taken into use, and transport apparatus for such a cartridge |
| 10/19/1976 | US3987488 Multi-tracks magnetic head with single turn winding structure |
| 09/28/1976 | US3983500 Angle modulated wave demodulation system |
| 09/28/1976 | US3982701 One piece core and platform for endless tape cartridges |
| 09/21/1976 | US3982277 Timing-error compensation for low-speed tape systems |
| 09/14/1976 | US3981025 Container for a disc-shaped recording medium and a drive unit for use therewith |
| 09/14/1976 | US3980570 Sliding member having anti-frictional and anti-static properties for a cassette |
| 09/14/1976 | US3980256 Tape cassette |
| 09/14/1976 | US3980255 Tape cassette |
| 09/14/1976 | US3980253 Cassette loading apparatus |
| 09/14/1976 | US3980246 Automatic tape winding system |
| 09/14/1976 | US3980207 Pinch rollers |
| 09/07/1976 | US3979770 System for preventing erasure of audio recordings |
| 09/07/1976 | US3978985 Two-piece case |
| 08/31/1976 | US3977626 Magnetic tape cartridge |
| 08/31/1976 | US3977523 Storage cell assembly |
| 08/24/1976 | US3977023 Tape recorder |
| 08/17/1976 | US3975768 Removable cartridge flexible disc memory apparatus |
| 08/17/1976 | US3974983 Tape feed and rewind cartridge |
| 08/17/1976 | US3974975 Doubled-end cartridge tape |
| 08/17/1976 | US3974906 Endless loop ribbon cartridge with random storage |
| 08/03/1976 | US3973274 Method and apparatus for mounting and positioning magnetic recording heads |
| 07/27/1976 | US3971523 Endless tape cartridge |
| 07/20/1976 | US3971071 Tape cassette with guide means for unidirectional insertion and holder therefore |
| 07/20/1976 | US3970317 Apparatus for inhibiting a plurality of disc records from being disposed on a turntable and grounding a disc record disposed on the turntable |
| 07/13/1976 | US3969767 Spacer supports for flexible disk structures |
| 07/13/1976 | US3969007 Cassette dispenser |
| 07/13/1976 | US3968941 Interbiased double tape spool assembly |
| 07/06/1976 | US3968519 Amplifier with howling-preventing circuit |
| 07/06/1976 | US3967789 Tape winding system |
| 07/06/1976 | US3967733 Tape reel hanger |
| 06/29/1976 | US3966107 Tape cassette |
| 06/22/1976 | US3965485 Drive mechanism for a disc-shaped code carrier |
| 06/15/1976 | USRE28863 Guide elements for magnetic tapes wound or to be wound in the form of packs on flangeless spools |
| 06/15/1976 | US3964100 Automatic tape loading apparatus for cassettes and the like |
| 06/15/1976 | US3963287 Storage devices |
| 06/08/1976 | US3962727 Magnetic rotary head recorder with automatic tape loading and unloading |
| 06/08/1976 | US3961763 Device for guiding a magnetic tape in a recording cassette |
| 06/08/1976 | US3961656 Phonograph record insulator |
| 06/01/1976 | US3961375 Apparatus for cleaning an informational tape |
| 06/01/1976 | US3961370 Rapid access storage device |
| 06/01/1976 | US3960338 Magnetic tape cassette hub with tape retention means |
| 05/25/1976 | US3959823 Flexible disc receiver using a tray which is withdrawn from a cartridge |
| 05/25/1976 | US3958870 Tacked film roll and method of making same |
| 05/18/1976 | US3957219 Endless tape traveling device |
| 05/11/1976 | US3955778 Tape cassette |
| 05/11/1976 | US3955777 Self threading leader for a reel of tape |
| 05/04/1976 | US3955214 Device for cleaning the magnetic head and capstan roller of a cassette-type recording and/or playback unit in response to operation of the tape drive of the unit |
| 05/04/1976 | US3954469 Method of creating a replicating matrix |
| 04/20/1976 | US3952170 Miniature apparatus for reproducing sound from a stationary record |
| 04/20/1976 | US3951264 Flexible disc cartridge |
| 04/13/1976 | US3950786 Magnetic tape cassette with sliding door to inhibit recording |
| 04/13/1976 | US3950785 Miniature tape cartridge with adaptor for use with eight track cartridge machines |
| 04/13/1976 | US3950782 Data storage and retrieval systems for use with plural track storage medium |
| 04/13/1976 | US3950481 Process for inverting an endless belt-type recording belt |
| 04/06/1976 | US3949422 Tape recorder with pivotal erase head bearing |
| 03/30/1976 | US3947893 Recording cassette including compliant magnetic recording disc having flexible support means |
| 03/30/1976 | US3947892 Helical scan type tape cassette having tape threading means |
| 03/30/1976 | US3947891 Static magnetic erasing head |
| 03/30/1976 | US3947885 Restraint device for buckling a flexible magnetic disk stack upon partitioning |
| 03/30/1976 | US3946865 Cassette container |
| 03/23/1976 | US3946249 Signal control circuit |
| 03/23/1976 | US3946156 Adapter for recording-reproducing machine |
| 03/23/1976 | US3945582 Cassette tape |
| 03/16/1976 | US3943879 Tape cartridge including edge marked magnetic tape |
| 03/09/1976 | US3943303 Abnormal sound eliminating system in record disc reproducing apparatus |
| 03/09/1976 | US3942744 Magnetic tape cartridge |
| 03/09/1976 | US3942743 Information tape cassette |
| 03/02/1976 | US3941333 Web cartridge |