Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7523694 | Cylinder liner preload system | James C. Aday, Lopek Drzewiecki, Andrew Dale Riley | 2009-04-28 |
| 6923254 | Washpipe apparatus | Wesley C. Morrow, Jeffery J. Dinkel | 2005-08-02 |