Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866823 | Processes and devices for mechanically setting a plurality of small precious stones on a flat face of a jewel | Alain M. Plantureux | 1989-09-19 |
| 4835987 | Processes for the mechanized manufacture of jewellery comprising a plurality of small contiguous stones set in a support made of precious metal, and jewellery obtained by these processes | Alain M. Plantureux | 1989-06-06 |