Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872070 | System and method for high speed video tape reproduction | John P. Yu | 1989-10-03 |
| 4868428 | Apparatus for shifting the frequency of complex signals | — | 1989-09-19 |
| 4866543 | Multiple slave video tape reproduction system | John P. Yu | 1989-09-12 |
| 4829257 | Method and apparatus for continuously shifting phase of an electronic signal | — | 1989-05-09 |