Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887032 | Resonant vibrating structure with electrically driven wire coil and vibration sensor | — | 1989-12-12 |
| 4841934 | Oxygen pumping device for control of the air fuel ratio | Eleftherios M. Logothetis, Richard E. Soltis, William C. Vassell | 1989-06-27 |
| 4806859 | Resonant vibrating structures with driving sensing means for noncontacting position and pick up sensing | — | 1989-02-21 |