Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7665174 | Cleaning head for use in a floor cleaning machine | Michael T. Basham, Warren L. Larson, Terence A. Peterson, Richard W. Wellens | 2010-02-23 |
| 7448114 | Floor sweeping and scrubbing machine | Terence A. Peterson, Warren L. Larson, Richard W. Wellens, Don Durenberger, Brent Hayden +2 more | 2008-11-11 |
| 4787923 | Apparatus for cleaning an air filter | Robert A. Geyer, Mark D. Kinter | 1988-11-29 |