Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4328749 | Information recording method and apparatus, and a half-product obtained thereby | Akio Ando, Ryuichi Nakahashi | 1982-05-11 |
| 4324368 | Yarn winding apparatus | Tadahiko Ohkubo | 1982-04-13 |