Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836984 | Dentures and alloys for use in same | Rudolf Wagner, Manfred Stumke, Werner Groll | 1989-06-06 |
| 4806306 | Attachments in the field of dental technology made of noble metal alloys with melting ranges above 1500 degree celsius | Werner Groll, Rudi Steinke | 1989-02-21 |