Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8421546 | Piezoelectric vibrator, oscillator, electronic equipment timepiece, and radio-controlled timepiece, and method of manufacturing piezoelectric vibrator | Kazuyoshi Sugama, Masashi Numata | 2013-04-16 |