Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889553 | Herbicides | John Clifford Head, Jurgen Westermann, Martin Kruger, Friedrich Arndt, Richard Rees | 1989-12-26 |
| 4888340 | Insecticides pyrazolines, compositions and use | Harribert Neh, Ulrich Buhmann, Peter Wegner, Hartmut Joppien, David Giles | 1989-12-19 |