Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4427300 | Timepiece with a perpetual calendar mechanism | — | 1984-01-24 |
| 4194353 | Analog display calendar watch | Michel Thomi, Serge Meylan | 1980-03-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4427300 | Timepiece with a perpetual calendar mechanism | — | 1984-01-24 |
| 4194353 | Analog display calendar watch | Michel Thomi, Serge Meylan | 1980-03-25 |