Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5337234 | Self-contained downhole gauge system | Terry O. Anderson, J. Mark Richardson, Jack C. Penn, Michael Lynch, Billy W. White +5 more | 1994-08-09 |
| 5299640 | Knife gate valve stage cementer | Steven G. Streich, John T. Brandell | 1994-04-05 |