Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805053 | Method and apparatus for detecting position of tape when recording or reproducing signals thereon | Fumiyoshi Abe | 1989-02-14 |
| 4795676 | Electrostatic recording material | Toshio Maekawa, Hiroshige Yamauchi, Takashi Toyota, Akeo Sawayama | 1989-01-03 |