Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312637 | Method of making a rod guide with both high erodible wear volume and by-pass area | Thomas E. Evans, H. Milton Hoff | 2001-11-06 |
| 6065537 | Rod guide with both high erodible wear volume and by-pass area | Thomas E. Evans, H. Milton Hoff | 2000-05-23 |
| 5755284 | Extended wear rod guide and method | Charles M. Hart, H. Milton Hoff, Stephen L. Witte, Sr. | 1998-05-26 |