Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5216836 | Movable root contact/pressure plate assembly for hydroponic system | Philip A. Loretan, Conrad K. Bonsi, Walter A. Hill | 1993-06-08 |
| 4860490 | Movable root contact-pressure plate assembly for hydroponic system | Philip A. Loretan, Conrad K. Bonsi, Walter A. Hill | 1989-08-29 |