Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8882341 | Stress-relief elastic structure of hairspring collet | Ho CHING, Pui Hang KO | 2014-11-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8882341 | Stress-relief elastic structure of hairspring collet | Ho CHING, Pui Hang KO | 2014-11-11 |