Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6824348 | Wind rotor operable in slow wind speeds | Barton D. Alexander | 2004-11-30 |
| 6237427 | Flow rate measuring system for crops supported on a conveyor | Jeremy A. Helfrich | 2001-05-29 |
| 4486972 | Animal trap | Clarence M. Helfrich | 1984-12-11 |