Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870868 | Vibration sensing apparatus | Edward Tom | 1989-10-03 |
| 4841256 | Piezoelectric phase locked loop circuit | — | 1989-06-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870868 | Vibration sensing apparatus | Edward Tom | 1989-10-03 |
| 4841256 | Piezoelectric phase locked loop circuit | — | 1989-06-20 |