Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889553 | Herbicides | Graham P. Rowson, John Clifford Head, Martin Kruger, Friedrich Arndt, Richard Rees | 1989-12-26 |
| 4859231 | (6,7-)dihydro-(1,2,4) triazolo (1,5-A) (1,3,5) Triazine-2-sulphonamides, and their use as herbicides and plant growth regulators | Martin Kruger, Friedrich Arndt, Richard Rees, Clemens Kotter | 1989-08-22 |