Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |