Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5026074 | Annular metal-to-metal seal | Joseph H. Hynes | 1991-06-25 |
| 4892149 | Method of securing a tubular member within an annular well member, the combined well structure and the tool | Thomas G. Cassity, Steven D. Gullion | 1990-01-09 |
| 4869319 | Wellhead structure | Edward J. Szymozak, Thomas G. Cassity, William M. Taylor, Peer H. Tiemer, Jerry D. Smith +1 more | 1989-09-26 |