Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8122949 | Tapered sleeve and fracturing head system for protecting a conveyance string | — | 2012-02-28 |
| 5396956 | Well head isolation tool sealing nipple testing apparatus and method of pressure testing isolation tool sealing nipple seals when in position on a well | Roderick D. McLeod, Albert Roesch | 1995-03-14 |