Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9371749 | Hybrid valve stem seal retainer assembly | Timothy A. Hegemier, Alexander Williamson | 2016-06-21 |
| 9052018 | Eccentricity tolerant valve stem seal assembly | Timothy A. Hegemier, Alexander Williamson | 2015-06-09 |
| 7438036 | Oil metering valve seal | Eric Hesher | 2008-10-21 |
| 6647943 | Valve stem seal assembly with locator system | Mark A. Leimer, Mark A. Stamback | 2003-11-18 |
| 6230679 | Valve stem seal with pads and tangs | Timothy A. Hegernier, Mark A. Stamback | 2001-05-15 |