Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863514 | Material for facing denture | Werner Groll | 1989-09-05 |
| 4689197 | Process for the production of a metallic denture | Werner Groll, Angela Klaus, Rudi Steinke | 1987-08-25 |
| 4576790 | Low gold dental alloys | Jurgen Hausselt, Rudi Steinke, Angela Klaus | 1986-03-18 |