Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5742565 | Crown setting device for a timepiece | Michel Plancon, Yves Vuillame, Chan Kwong Fung | 1998-04-21 |
| 5644553 | Combined crown/pushbutton for illuminated analog watch | — | 1997-07-01 |
| 5333123 | Continuous waterproof timepiece case with integral case back blank | Michel Plancon | 1994-07-26 |