Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654941 | Device for fastening a rotationally symmetrical part, in particular a rotatable ring, a back cover or a watch-glass to a watchcase | — | 1997-08-05 |
| 5521889 | Watch having a fluid-tight rotary crystal or crystal-bezel unit | Renato Scarinzi, Hanspeter Gradel | 1996-05-28 |