Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6050788 | Pump with improved seal for filtration systems | Stephen N. McEwen, Richard A. Hallett, Scott M. McEwen, Anthony J. Palumbo | 2000-04-18 |
| 5820756 | Disc filter assembly for machine tool coolant | Stephen N. McEwen, Jay M. Creps, Scott M. McEwen, Richard A. Hallet, Barry Benschoter | 1998-10-13 |
| 5655849 | Couplings for joining shafts | Stephen N. McEwen, Richard A. Hallett, Scott M. McEwen, Anthony J. Palumbo | 1997-08-12 |
| 5637213 | Immersible filter drum unit and method for assembling thereof | Stephen N. McEwen, Jay M. Creps, Scott M. McEwen, Richard A. Hallet, Barry Benschoter | 1997-06-10 |
| 5503520 | Pump for filtration systems | Stephen N. McEwen, Richard A. Hallett, Scott M. McEwen, Anthony J. Palumbo | 1996-04-02 |
| 4467633 | Trough, manufacturing process, and apparatus | Stephen N. McEwen, Robert L. Stevens, Barry Benschoter | 1984-08-28 |
| 4420868 | Trough manufacturing process | Stephen N. McEwen, Robert L. Stevens, Barry Benschoter | 1983-12-20 |