Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6119720 | Flood control device | Eric Nyenhuis, James Nyenhuis, Terry J. Simpkins, Sr., Terry J. Simpkins, Jr. | 2000-09-19 |
| 5782263 | Flood control device | Eric Nyenhuis, James Nyenhuis, Terry J. Simpkins, Sr., Terry J. Simpkins, Jr. | 1998-07-21 |