Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854082 | Apparatus for grinding tooth replacement primary crown castings | Christian Frank | 1989-08-08 |
| 4218244 | Gold alloy for firing on porcelain for dental purposes | — | 1980-08-19 |