Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4360605 | Mixing component for dental glass ionomer cements | Werner Schmitt, Robert Purrmann, Oswald Gasser | 1982-11-23 |
| 4351853 | Method for producing prosthetic dental appliances by photopolymerizing a shapeable mass | Oswald Gasser | 1982-09-28 |