Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11466418 | Adjustable snowplow | — | 2022-10-11 |
| 10428478 | Expandable containment plow | Craig Kemmerling, Thomas A. Miller | 2019-10-01 |
| 10316480 | Adjustable snow plow | Craig Kemmerling, Thomas A. Miller | 2019-06-11 |
| 7896630 | Rotary device with reciprocating vanes and seals therefor | Robert Grisar, Kim Luckner | 2011-03-01 |
| D396902 | Vacuum cleaner headlight cap assembly | Thomas Fedorka, Joseph S. Gardner, Kenneth R. Parker | 1998-08-11 |
| 5784750 | Multi-component flow passage assembly with snap in sealing adaptor | Erik S. Larson, Martin Warchola | 1998-07-28 |
| D392779 | Headlight cap assembly for vacuum cleaner or similar article | Thomas Fedorka, Joseph S. Gardner, Kenneth R. Parker | 1998-03-24 |