Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4505734 | Copper based algaecides and aquatic herbicides | Carol B. Freedenthal, Marion D. Meyers | 1985-03-19 |
| 4361435 | Copper and amine based aquatic herbicides | Marion D. Meyers | 1982-11-30 |