Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6123061 | Crankcase ventilation system | Glenn L. Baker, David M. Ruch, Brett Herrick | 2000-09-26 |
| 5669366 | Closed crankcase ventilation system | Donald W. Beach, Peter K. Herman, Alan S. Bounnakhom, David M. Ruch, J. Eric Parlow | 1997-09-23 |