| Patents for G11B 25 - Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing (7,037) |
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| 02/15/1977 | US4007547 Card handling teaching machine with instantaneous feedback system |
| 02/08/1977 | US4007491 Dictation-transcription method and system |
| 01/25/1977 | US4005489 Tape-operating apparatus adapted for use either with an endless loop type or a coplanar type cassette |
| 01/25/1977 | US4005488 Tape-operating apparatus adapted for use either with an endless loop type cartridge or a coplanar type cassette |
| 01/25/1977 | US4005487 Tape-operating apparatus adapted for use either with an endless loop type cartridge or a coplanar type cassette |
| 01/25/1977 | US4004815 Miniature toy sound-reproducing device |
| 01/04/1977 | US4001893 Portable tape-recorder |
| 12/14/1976 | US3997917 Card handling apparatus |
| 11/30/1976 | USRE29058 Miniature cassette adapter apparatus and cassette tape recorder-reproducer |
| 11/30/1976 | US3995316 Or reproducing apparatus, and record assembly for use therein |
| 10/26/1976 | US3988542 Variable message recorder using a disc without grooves and a single motor to provide both turntable drive and spiral scanning |
| 10/19/1976 | US3987494 Portable magnetic tape player with handle constituting magnetic tape head indexing mechanism |
| 10/05/1976 | US3984111 Toy phonograph |
| 10/05/1976 | US3984040 Deck nailing apparatus |
| 08/17/1976 | US3975767 Combination card and tape recorder |
| 08/03/1976 | US3973273 Magnetic disk storage apparatus |
| 08/03/1976 | US3972620 Azimuth angle measuring apparatus |
| 07/06/1976 | US3968329 Telephone answering apparatus |
| 06/22/1976 | US3964188 Audiovisual book system |
| 06/15/1976 | US3964099 Cassette adapter |
| 06/15/1976 | US3964095 Video recording and/or reproducing apparatus |
| 06/15/1976 | US3963863 Device for reading out information recorded upon a substrate |
| 06/15/1976 | US3963189 Miniature tape cartridge and adaptor |
| 06/08/1976 | US3962641 Tuning apparatus |
| 05/11/1976 | US3956767 Signal recording and/or reproducing apparatus with phase shifting to reduce signal amplitude at overlap points |
| 05/11/1976 | US3956591 Two-input automatic source selector for stereo entertainment center |
| 05/04/1976 | US3955216 Retention device for endless cartridge tape recorder |
| 04/13/1976 | US3950785 Miniature tape cartridge with adaptor for use with eight track cartridge machines |
| 03/09/1976 | US3943563 System and method for recording and reproducing video information on a card |
| 03/09/1976 | US3943275 Precision turntable rotation in a vacuum atmosphere |
| 02/24/1976 | US3940794 Stacked flexible record disk storage apparatus having enhanced disk separation |
| 02/24/1976 | US3940792 Tape recorder, particularly cassette recorder |
| 02/03/1976 | US3936056 Brake mechanism |
| 01/27/1976 | US3934841 Tape drive |
| 01/20/1976 | US3934267 Vital phenomenon recording and/or reproducing device |
| 01/13/1976 | US3932895 Reversible magnetic recording disk unit |
| 01/13/1976 | US3932892 Superminiature cassette tape recorder |