Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6428590 | Filter system for mobile debris collection machine | Ronald W. Lehman | 2002-08-06 |
| 6389641 | Dual mode debris pickup machine | Steven L. Boomgaarden, Michael L. Blehert | 2002-05-21 |