Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364097 | Tape speed control device | Jacob De Boer, Friedrich Sommer | 1982-12-14 |
| 4309730 | Method of reading and/or writing information and apparatus for carrying out the method | — | 1982-01-05 |