Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12303813 | Quick change oil filter | Jeremy P. Robison, David W. Geiger | 2025-05-20 |
| 11351488 | Quick change oil filter | Jeremy P. Robison, David W. Geiger | 2022-06-07 |
| 8255126 | Aerator having flexible frame | Kenneth Edward Hunt, Shane D. Simon, Troy W. Harris, III, Harlin J. Trefz, Ronald L. Reichen +1 more | 2012-08-28 |
| 7971416 | Mounting hydraulic motor on mower deck | Stanley K. Hall, Jeffrey David Witwer, James Edward Muse, Roger Howard Tesch | 2011-07-05 |
| 7370718 | Hood with integral air duct | Jeffrey David Witwer, Stanley K. Hall, Jennifer Lynn Jaramillo, Roger Howard Tesch | 2008-05-13 |
| 6149228 | Modular operator enclosure | Michael J. O'Neill, Michael Perry Reimer, Leon Roy Friesen, Irvin Goertzen | 2000-11-21 |
| 5577434 | Hydraulic valve assembly | Robert B. Janvrin, Jeffrey J. Karabetsos | 1996-11-26 |
| 5335494 | Hydraulic system for reel mower vehicles | Andrew T. Benko, James A. Swartzendruber, Gary N. Clark | 1994-08-09 |