Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4181621 | Cleaning agents for dentures | Helmut Raaf, Helmut Harth | 1980-01-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4181621 | Cleaning agents for dentures | Helmut Raaf, Helmut Harth | 1980-01-01 |