Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4422776 | Device for correction of time date displayed by an electronic watch | Norbert Perucchi | 1983-12-27 |
| 4398832 | Multifunction timepiece | Jean-Georges Michel, Jean-Claude Robert-Grandpierre | 1983-08-16 |