Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5247511 | Compact sound record playing apparatus | Masumi Kaneko, Yasushi Ohtani | 1993-09-21 |
| 5177733 | Sound recording playing apparatus with improved vibration plate | Masumi Kaneko, Yasushi Ohtani | 1993-01-05 |
| 5138602 | Sound record playing apparatus having shock responsive weight member to actuate the same | Seiji Ohata | 1992-08-11 |
| 5109371 | Manual simplified acoustic playback apparatus | Hitoshi Ishii | 1992-04-28 |
| 5103442 | Simplified acoustic playback apparatus | Seiji Ohata | 1992-04-07 |
| 5054012 | Sound reproducing device for playing a record disc having a plurality of recorded grooves | Yasuhiko Yusa | 1991-10-01 |
| 4876678 | Sound reproducing device for playing a record disc having a plurality of recorded grooves | Yasuhiko Yusa | 1989-10-24 |
| 4862444 | Index carrier for indexing and reproducing a plurality of record discs and a simplified sound reproducing device incorporating thereof | — | 1989-08-29 |
| 4827465 | Simplified sound reproducing device having a means for preventing collision between a reproducing stylus and a record disc | — | 1989-05-02 |
| 4823332 | Simplified sound reproducing device capable of reproducing a plurality of record discs | — | 1989-04-18 |
| 4811322 | Phonograph for a record disk having a plurality of sound grooves | Kazumi Nozawa | 1989-03-07 |
| 4801880 | Device for measuring the speed of a moving object | — | 1989-01-31 |
| 4800305 | Pull string mechanism in a pull string type sound reproducing device | — | 1989-01-24 |
| 4757491 | Sound generating toy | — | 1988-07-12 |
| 4723291 | Voice generating device | — | 1988-02-02 |
| 4705994 | Electric equipment driving circuit | — | 1987-11-10 |
| 4701681 | Starting device for a toy motor using an ultrasonic wave signal | — | 1987-10-20 |
| 4694445 | Record disc replacing means for a selective playing type sound reproducing device | — | 1987-09-15 |
| 4694444 | Record disc replacing means | — | 1987-09-15 |
| 4694446 | Simplified sound reproducing device of random selecting type | — | 1987-09-15 |
| 4670868 | Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items | — | 1987-06-02 |
| 4670867 | Simplified sound reproducing device having a plurality of external shaft corresponding to the recorded items | — | 1987-06-02 |
| 4648086 | Simplified sound reproducing device capable of reproducing a plurality of recorded items | — | 1987-03-03 |
| 4622658 | Simplified sound reproducing device having switchable circuits | — | 1986-11-11 |
| 4574370 | Sound reproduction selection apparatus for a simplified sound reproducing device | — | 1986-03-04 |