Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855826 | Zone plate signal generator | Gerhard Wischermann | 1989-08-08 |
| 4851909 | Method and apparatus for maintaining audio/ video synchronism in a television signal read-out from a digital buffer memory by a reference signal | Reiner Noske, Jurgen Heitmann | 1989-07-25 |