Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888098 | Method and articles employing ion exchange material | Eric Nyberg, Ken A. Klingman, Jeff Curtis | 1989-12-19 |
| 4830855 | Temperature-controlled active agent dispenser | — | 1989-05-16 |
| 4826685 | Molluscicidal device | — | 1989-05-02 |