Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6542074 | Monitoring system for an internal combustion engine | Paul A. Tharman, Gary J. Gracyalny | 2003-04-01 |
| 5619845 | Battery-powered lawn cutting system | Patrick Bruener, Paul A. Tharman, John A. Fiorenza, II, Joseph L. Pfaff, Richard A. Dykstra | 1997-04-15 |
| 5606851 | Battery-powered lawn cutting system | Patrick Bruener, Paul A. Tharman, John A. Fiorenza, II, Joseph L. Pfaff, Richard A. Dykstra | 1997-03-04 |