Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853800 | Method and circuit for recording broadband signals on a magnetic record medium | — | 1989-08-01 |
| 4823211 | Rotary magnetic tape transducer headwheel structure | Manfred Hescher, Berthold Eiberger | 1989-04-18 |