Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5820756 | Disc filter assembly for machine tool coolant | Stephen N. McEwen, Scott M. McEwen, Richard A. Hallet, Robert F. Benschoter, Barry Benschoter | 1998-10-13 |
| 5637213 | Immersible filter drum unit and method for assembling thereof | Stephen N. McEwen, Scott M. McEwen, Richard A. Hallet, Robert F. Benschoter, Barry Benschoter | 1997-06-10 |
| 5389256 | Filter apparatus for machine tool coolant | Stephen N. McEwen, Scott M. McEwen | 1995-02-14 |
| 5158691 | Filter apparatus and method for filtering contaminants from machine tool coolant | Stephen N. McEwen, Scott M. McEwen | 1992-10-27 |