Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679253 | Rotating biological aquarium filter system | Charles O. Fuerst | 1997-10-21 |
| 5603831 | Dual impeller pump | — | 1997-02-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679253 | Rotating biological aquarium filter system | Charles O. Fuerst | 1997-10-21 |
| 5603831 | Dual impeller pump | — | 1997-02-18 |