Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853223 | Control of ectoparasites | Jean-Francois Graf, Hans Walter Hasslin, Hessel J. Schuurman, Bruno Wieland | 1989-08-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853223 | Control of ectoparasites | Jean-Francois Graf, Hans Walter Hasslin, Hessel J. Schuurman, Bruno Wieland | 1989-08-01 |