Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363059 | Magnetic tape cassette | Yoneo Matsuzawa, Yoshio Kawakami | 1982-12-07 |
| 4338367 | Magnetic recording tape | Yoshio Kawakami, Yoneo Matsuzawa | 1982-07-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363059 | Magnetic tape cassette | Yoneo Matsuzawa, Yoshio Kawakami | 1982-12-07 |
| 4338367 | Magnetic recording tape | Yoshio Kawakami, Yoneo Matsuzawa | 1982-07-06 |