Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5804154 | Process for the production of a silica-substance containing materials and materials produced therefrom | — | 1998-09-08 |
| 4818570 | Process for the production of smooth-surfaced parts from a hard gemlike material, and the use of this process | — | 1989-04-04 |
| 4817064 | Structure for fabricating jewelry parts or wrist watches | — | 1989-03-28 |
| D278579 | Seat | — | 1985-04-30 |