Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6289559 | Fastening device for appending a piece of jewelry to a jewelry clasp or the like | — | 2001-09-18 |
| 5845373 | Jewelry latch | — | 1998-12-08 |
| 4339776 | Preprogrammable recording system with automatic warning of time limit | Helmut Mach, Harald Melwisch | 1982-07-13 |