Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5873157 | Field installable rod guide and method | Charles M. Hart, H. Milton Hoff, John L. Tillman, Jr., Stephen L. Witte, Sr. | 1999-02-23 |
| 5865245 | Stuffing box gland | Leslie Dean Smith, Thomas S. Evans | 1999-02-02 |
| D362196 | Rod guide gauge | Larry Angelo | 1995-09-12 |
| 5339896 | Field installable rod guide and method | Charles M. Hart, H. Milton Hoff, John L. Tillman, Jr., Stephen L. Witte, Sr. | 1994-08-23 |