Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814901 | Video cassette recorder for rental use which is rendered unusable after a predetermined period of time | Toshikazu Masumoto, Kazumi Murakami, Kiyoshi Yoshida | 1989-03-21 |