Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636130 | Piezoelectric filter with different ratios of unpolarized vibration area to total vibration area in two filter elements | — | 2003-10-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636130 | Piezoelectric filter with different ratios of unpolarized vibration area to total vibration area in two filter elements | — | 2003-10-21 |