Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4908725 | Recording medium casing with erase prevention device | — | 1990-03-13 |
| 4802044 | Mounting arrangements for levy springs acting against tape reels in a cassette | Kiyoshi Urayama | 1989-01-31 |