Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4386857 | Electronic timepiece with automatic correction of the variation of rate | — | 1983-06-07 |
| 4300223 | System for making-up steps lost by the motor of a time-piece | — | 1981-11-10 |
| 4216648 | System for detecting the end useful life of a battery in an electronic time-piece | — | 1980-08-12 |