Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4415826 | Support and connection device for a disc-shaped piezoelectric resonator | Hans Kreutzev | 1983-11-15 |
| 4379247 | Resonator plate capable of excitation to thickness shear vibrations | — | 1983-04-05 |
| 4326142 | Piezoelectric resonators | — | 1982-04-20 |
| 4188557 | Piezoelectric overtone resonator with at least a convex surface and specific thickness and diameter or diagonal | — | 1980-02-12 |