Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819097 | Audio signal recording/reproducing system for use in time-lapse video tape recorder | Nobuo Azuma, Masaru Takahashi, Katsumi Mikamo | 1989-04-04 |
| 4803322 | Electrical contacts for electric breakers | — | 1989-02-07 |