Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7992770 | Spec-trac | — | 2011-08-09 |
| 5850656 | Highway debris entrainment and storage device | Owen Smith, William E. Daniels, Jr. | 1998-12-22 |
| 5745947 | Automatic debris retrieval system | Kaibai Liu, Walter J. Petersen | 1998-05-05 |
| 5577286 | Highway debris entrainment and storage device | Owen Smith, William E. Daniels, Jr. | 1996-11-26 |
| 5291842 | High pressure liquid containment joint for hydraulic aerator | Steven A. Sallstrom, Gary R. Lamusga | 1994-03-08 |
| 5101745 | Method and apparatus for soil cultivation by high pressure injection of fluids | Dean A. Podevels, Robert C. Comer, Dana R. Lonn, David J. Scherbring, John M. Beattie +1 more | 1992-04-07 |
| 4864805 | System for supporting a working unit | Joseph P. Hager | 1989-09-12 |
| 4854112 | Turf maintenance apparatus | Walter J. Petersen, Michael N. Zenner | 1989-08-08 |