Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4403446 | Hydroponic growing medium and method | Marvin G. Fiechtner | 1983-09-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4403446 | Hydroponic growing medium and method | Marvin G. Fiechtner | 1983-09-13 |