Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5355961 | Metal and elastomer casing hanger seal | James A. Gariepy | 1994-10-18 |
| 5327965 | Wellhead completion system | Garry Stephen, Dale Brian Marietta, Norman Brammer, Casimir J. Fritshe, Allan Sharp | 1994-07-12 |
| 5299644 | Well starter head | — | 1994-04-05 |
| 5285853 | Casing hanger seal with test port | Carl F. Boehm, Jr. | 1994-02-15 |
| 5205356 | Well starter head | Charles D. Bridges, Dale Brian Marietta | 1993-04-27 |
| 4949786 | Emergency casing hanger | Graeme Johnston, Peter M. Kent | 1990-08-21 |