Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D492322 | User interface for a computer screen | David Dewar, Roy Ballantine | 2004-06-29 |
| 6050788 | Pump with improved seal for filtration systems | Stephen N. McEwen, Richard A. Hallett, Robert F. Benschoter, Anthony J. Palumbo | 2000-04-18 |
| 5820756 | Disc filter assembly for machine tool coolant | Stephen N. McEwen, Jay M. Creps, Richard A. Hallet, Robert F. Benschoter, Barry Benschoter | 1998-10-13 |
| 5655849 | Couplings for joining shafts | Stephen N. McEwen, Richard A. Hallett, Robert F. Benschoter, Anthony J. Palumbo | 1997-08-12 |
| 5637213 | Immersible filter drum unit and method for assembling thereof | Stephen N. McEwen, Jay M. Creps, Richard A. Hallet, Robert F. Benschoter, Barry Benschoter | 1997-06-10 |
| 5582740 | Machine tool coolant filtering system for segregating different contaminants | Michael R. Bailey | 1996-12-10 |
| 5503520 | Pump for filtration systems | Stephen N. McEwen, Richard A. Hallett, Robert F. Benschoter, Anthony J. Palumbo | 1996-04-02 |
| 5417849 | Machine tool coolant filtering system | Michael R. Bailey | 1995-05-23 |
| 5389256 | Filter apparatus for machine tool coolant | Stephen N. McEwen, Jay M. Creps | 1995-02-14 |
| 5344556 | Filter media rewinding mechanism | James S. Thomas, Mark A. Smith | 1994-09-06 |
| 5338443 | Filter media tensioning device | — | 1994-08-16 |
| 5158691 | Filter apparatus and method for filtering contaminants from machine tool coolant | Stephen N. McEwen, Jay M. Creps | 1992-10-27 |