Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7234252 | Method and apparatus for beneficiating soils during vacuum excavation | Dennis R. Jarnecke | 2007-06-26 |
| 5232018 | Parallel porting valve assembly | William F. Rush, Dennis Sadowski | 1993-08-03 |
| 4987924 | Interchangeable automated porting valve | William F. Rush, Dennis Sadowski | 1991-01-29 |