Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358070 | Magnetic tape cassette | Masatoshi Okamura | 1982-11-09 |
| 4349166 | Magnetic tape cassette | Toshihiko Ishida | 1982-09-14 |
| 4347933 | Case for holding magnetic tape cassette | Toshihiko Ishida | 1982-09-07 |
| 4333620 | Tape cassette | Toshihiko Ishida | 1982-06-08 |