Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7028787 | Tong for wellbore operations | John Timothy Allen, Bernd-Georg Pietras, Jeffrey Michael Habetz | 2006-04-18 |
| 6668684 | Tong for wellbore operations | John Timothy Allen, Bernd-Georg Pietras, Jeffrey Michael Habetz | 2003-12-30 |
| 6412554 | Wellbore circulation system | John Timothy Allen, Bernd-Georg Pietras, Jeffrey Michael Habetz | 2002-07-02 |
| 6330911 | Tong | John Timothy Allen | 2001-12-18 |
| 5135238 | Lubricated pump packing assembly | John R. Wells | 1992-08-04 |