Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9823624 | Method for producing timepiece spring, device for producing timepiece spring, timepiece spring, and timepiece | Masao Takeuchi, Masatoshi Moteki, Shoichi Nagao | 2017-11-21 |