Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890072 | Phase locked loop having a fast lock current reduction and clamping circuit | Roy H. Espe | 1989-12-26 |
| 4872207 | Automatic IF tangent lock control circuit | — | 1989-10-03 |
| 4845750 | Multiple function control circuit for an AM stereo receiver | Roy H. Espe | 1989-07-04 |