Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6913041 | Tapered boom hose | Gary D. Lehnhardt | 2005-07-05 |
| 6871832 | Fiberglass, reinforced concrete hose shut-off valve | Gary D. Lehnhardt, Gordon Guslick, Gerald Biever, James H. Larson | 2005-03-29 |
| 5896931 | Convertible garden tiller | Bruce E. Roberts | 1999-04-27 |
| 5862655 | Adjustable mowing and trimming apparatus | James M. D'Aleo, Charles R. Elder, Mathieu Grumberg, Bruce E. Roberts | 1999-01-26 |
| 5713420 | Convertible garden tiller | Bruce E. Roberts | 1998-02-03 |