Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9869157 | Reverse circulation cementing system for cementing a liner | Emile Edmund Sevadjian, Gary Allen Kohn, Arthur Stautzenberger, Richard Paul Noffke, Stephen Ross Maddux +3 more | 2018-01-16 |