| 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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| 12/11/1984 | US4488191 Magnetic recording disk cartridge |
| 12/11/1984 | US4488190 Magnetic recording disk cartridge |
| 12/11/1984 | CA1179306A1 Tape winding system |
| 12/06/1984 | WO1984004846A1 Improved continuous loop tape cassette |
| 12/06/1984 | WO1984004845A1 Improved continuous loop tape cassette |
| 12/06/1984 | WO1984004840A1 A cleaning cassette for use in a cassette tape recorder |
| 12/06/1984 | WO1984004839A1 Flexible hub for removable disk |
| 12/06/1984 | WO1984004737A1 Optical disk cartridge |
| 12/05/1984 | EP0127444A1 Lubricant film coated magnetic disks |
| 12/05/1984 | EP0126884A1 Magnetic recording disk cartridge |
| 12/04/1984 | US4486320 Engineering plastics |
| 12/04/1984 | US4486262 Storing, feeding and handling mechanism |
| 12/04/1984 | US4485990 Recording tape cassette |
| 12/04/1984 | US4485989 Recording tape cassette |
| 12/04/1984 | US4485988 Tape cassette |
| 12/04/1984 | US4485674 Electromechanical means for determining signature for reeled web |
| 11/28/1984 | EP0126539A2 Audio compact cassette |
| 11/28/1984 | EP0126205A1 Container for storing a magnetic-tape cassette |
| 11/27/1984 | US4485421 Colored floppy diskette |
| 11/27/1984 | US4484797 Diffractive subtractive color filter responsive to angle of incidence of polychromatic illuminating light |
| 11/27/1984 | US4484719 Magnetic-tape cassette with anti-telescoping guides and reels |
| 11/27/1984 | US4484701 Cassette tape rack |
| 11/21/1984 | EP0125688A2 Recording tape cartridge |
| 11/21/1984 | EP0125656A2 Photo-electric sensor device for a magnetic-tape apparatus |
| 11/21/1984 | EP0125479A1 Flexible optical disc |
| 11/21/1984 | EP0125478A2 Magnetic record disk with internal servo track |
| 11/20/1984 | US4484248 Magnetic recording tape cartridge |
| 11/20/1984 | US4484242 Tape guide for tensioning tape and regulating the running thereof in a small or mini-cassette |
| 11/20/1984 | US4484239 Miniature casette tape recorder-player |
| 11/14/1984 | EP0124873A2 Tape cassette dust door latch spring assembly |
| 11/13/1984 | US4482929 Magnetic recording disk cartridge |
| 11/13/1984 | US4482903 Disk unit with retaining ring |
| 11/13/1984 | US4482104 Tape cassette |
| 11/13/1984 | US4481832 Test cassette for measuring the torque of a winding mandrel of a cassette-playing apparatus |
| 11/13/1984 | CA1177954A1 Rotary recording medium and a recording system thereof |
| 11/08/1984 | WO1984004417A1 Optical recording and reproducing apparatus |
| 11/07/1984 | EP0123854A2 Process for chemically bonding lubricant to an information carrier |
| 11/06/1984 | US4481617 Memory disc drive |
| 11/06/1984 | US4481616 Scanning capacitance microscope |
| 11/06/1984 | US4481552 Disc unit for information recording and/or reading system |
| 11/06/1984 | CA1177576A1 Flexible magnetic disk cassette and a recording and/or reproducing apparatus for the same |
| 10/31/1984 | EP0123124A1 Cleaning cassette for tape recorder and/or player magnetic head |
| 10/31/1984 | EP0122930A1 Device for a video tape cassette intended for rental purposes |
| 10/30/1984 | US4480282 Stabilized locating ring for a flexible disk |
| 10/30/1984 | US4479618 Tape cassette adapter |
| 10/30/1984 | US4479580 Casing for receiving cassette |
| 10/30/1984 | US4479579 Non-dublicable magnetic disk jacket and method of manufacture |
| 10/30/1984 | US4479577 Pivotal filing container for magnetic disks |
| 10/30/1984 | CA1177163A1 Flexible magnetic disk cassette |
| 10/30/1984 | CA1177162A1 Magnetic tape cassette comprising a device for detecting the winding of the tape |
| 10/30/1984 | CA1177161A1 Non-abrasive magnetic head cleaning system |
| 10/24/1984 | EP0122678A2 Apparatus for measuring the position of at least one magnetic head in a cassette tape recorder with respect to the tape transport path |
| 10/23/1984 | US4479209 Apparatus for reproducing signals recorded on a disk |
| 10/23/1984 | US4478768 Method for manufacturing optical type recording medium |
| 10/23/1984 | US4478674 Apparatus for supporting and aligning splicing tape on a splicing wheel |
| 10/23/1984 | US4478464 Rack-mountable storage enclosure for differently sized magnetic tape enclosures |
| 10/23/1984 | US4478376 Method of winding magnetic recording tape |
| 10/23/1984 | CA1176749A1 Tape cassette storage box |
| 10/17/1984 | EP0121563A1 Cassette loading machine |
| 10/17/1984 | EP0121562A1 Machine for loading cassettes |
| 10/17/1984 | EP0121561A1 In-cassette loading machine |
| 10/16/1984 | US4477894 Protective cartridge for disc record |
| 10/16/1984 | US4477851 Magnetic data storage and drive apparatus |
| 10/16/1984 | US4477850 Adapter for a miniature type tape cassette |
| 10/16/1984 | US4477848 Verification of recorded messages |
| 10/16/1984 | US4476990 Slip and skid resistant reel carrier |
| 10/16/1984 | US4476978 Disc accommodating case |
| 10/09/1984 | US4476510 Tape cassette |
| 10/09/1984 | US4476505 Miniature type tape cassette |
| 10/09/1984 | US4476468 Secure transaction card and verification system |
| 10/09/1984 | US4476177 Magnetic tape having a leader tape |
| 10/09/1984 | US4475700 Tape cassette dust door latch spring assembly |
| 10/09/1984 | CA1175937A1 Case for a disc-shaped recording medium |
| 10/03/1984 | EP0120611A2 Tape cassette with clutch assembly |
| 10/03/1984 | EP0120467A2 Tape reel for a magnetic tape |
| 10/02/1984 | US4475222 Tape cassette with use counter |
| 10/02/1984 | US4475153 Method and apparatus for automatic control of electronic equipment |
| 10/02/1984 | US4474342 Magnetic tape cartridge with spring biased roller |
| 10/02/1984 | CA1175404A1 Tape guide for tensioning tape and regulating the running thereof in a small or mini-cassette |
| 09/27/1984 | WO1984003791A1 Video cassette play counting, storing and reading system |
| 09/26/1984 | EP0119320A1 Storage container for recording media |
| 09/25/1984 | US4473280 Audio-visual cartridge and combined audio player and visual viewer |
| 09/25/1984 | US4473202 Magnetic-tape cassette with improved anti-erase arrangement |
| 09/25/1984 | US4473198 Spool for video cassette |
| 09/25/1984 | US4473194 Tape reel |
| 09/25/1984 | US4472942 Tandem brake master cylinder with anti bottoming system |
| 09/25/1984 | CA1175142A1 Tape guide system |
| 09/19/1984 | EP0118930A1 Method of manufacturing metal matrices |
| 09/19/1984 | EP0118636A2 Optical disc cartridge |
| 09/18/1984 | US4472753 Braking mechanism for cassette tape reel |
| 09/18/1984 | US4472337 Video disc processing |
| 09/18/1984 | US4472124 Device for producing an information recording disk |
| 09/18/1984 | EP0056799A4 Indicator device for cassettes loaded with magnetical information carrier. |
| 09/12/1984 | EP0118146A1 Optically readable storage disc |
| 09/12/1984 | EP0118143A1 Method and device for manufacturing an information carrier of a synthetic material having a laminated structure |
| 09/11/1984 | US4471397 Magnetic disk cartridge |
| 09/11/1984 | US4471395 Self-ventilated recirculating airflow system |
| 09/11/1984 | US4471394 Magazine-equipped cassette tape recorder-player |
| 09/11/1984 | US4470795 Apparatus for manufacturing a disc record package |
| 09/11/1984 | US4470560 Cassette adapter |