Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5820756 | Disc filter assembly for machine tool coolant | Stephen N. McEwen, Jay M. Creps, Scott M. McEwen, Richard A. Hallet, Robert F. Benschoter | 1998-10-13 |
| 5637213 | Immersible filter drum unit and method for assembling thereof | Stephen N. McEwen, Jay M. Creps, Scott M. McEwen, Richard A. Hallet, Robert F. Benschoter | 1997-06-10 |
| 5330648 | Filter media hold down mechanism | Barry L. Nehls | 1994-07-19 |
| 4467633 | Trough, manufacturing process, and apparatus | Stephen N. McEwen, Robert L. Stevens, Robert F. Benschoter | 1984-08-28 |
| 4420868 | Trough manufacturing process | Stephen N. McEwen, Robert L. Stevens, Robert F. Benschoter | 1983-12-20 |