Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833430 | Coupled-dual resonator crystal | Gerald E. Roberts, Samuel Toliver | 1989-05-23 |
| 4676993 | Method and apparatus for selectively fine-tuning a coupled-dual resonator crystal and crystal manufactured thereby | Gerald E. Roberts, Samuel Toliver | 1987-06-30 |
| 4477952 | Piezoelectric crystal electrodes and method of manufacture | John U. Daniels, Jr., Gerald E. Roberts | 1984-10-23 |