Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7100569 | Method of providing shaft biasing lubrication for a short runner valve shaft | John W. Duddles, Frederick K. Miller, Kevin C. Goldstein | 2006-09-05 |
| 6854180 | Method of providing shaft biasing lubrication for a short runner valve shaft | John W. Duddles, Frederick K. Miller, Kevin C. Goldstein | 2005-02-15 |
| 6543413 | Short runner valve plate and shaft biasing lubrication | John W. Duddles, Frederick K. Miller, Kevin C. Goldstein | 2003-04-08 |