Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5574657 | Electronic rate meter controller and method | S. David Tofte | 1996-11-12 |
| 5475614 | Method and apparatus for controlling a variable fluid delivery system | S. David Tofte | 1995-12-12 |
| 5323721 | Planter monitor system | Semor D. Tofte, Dennis J. Berning, Thomas K. Hiniker | 1994-06-28 |
| 5260875 | Networked agricultural monitoring and control system | David S. Tofte, Richard W. Heiniger | 1993-11-09 |