Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11330753 | Drum style rotary tiller | Randy L. Schamberger, David P. Flesch, Robert J. Ruppel | 2022-05-17 |
| 10398071 | Drum style rotary tiller | Randy L. Schamberger, David P. Flesch, Robert J. Ruppel | 2019-09-03 |
| 9730371 | Drum style rotary tiller | Randy L. Schamberger, David P. Flesch, Robert J. Ruppel | 2017-08-15 |
| 9307687 | Drum style rotary tiller | Randy L. Schamberger, David P. Flesch, Robert J. Ruppel | 2016-04-12 |
| 7270100 | Electric start mini-cultivator | Ronald Ruppel | 2007-09-18 |
| 4488605 | Extendible shank auger | Richard W. Ruppel | 1984-12-18 |