Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876678 | Sound reproducing device for playing a record disc having a plurality of recorded grooves | Eishi Koike | 1989-10-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876678 | Sound reproducing device for playing a record disc having a plurality of recorded grooves | Eishi Koike | 1989-10-24 |