Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7918277 | Method of treating subterranean formations using mixed density proppants or sequential proppant stages | Harold Dean Brannon, William Dale Wood, Allan R. Rickards, Christopher John Stephenson, Doug Walser +1 more | 2011-04-05 |