Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5239522 | Method for the setting of the perpetual calendar of an analogic quartz chronograph as well as a quartz chronograph for carrying it out | — | 1993-08-24 |
| 5172351 | Piece mechanisms for watch movements | — | 1992-12-15 |