Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8772207 | Spherical pellets containing common clay particulate material useful as a proppant in hydraulic fracturing of oil and gas wells | Bryan Dell Geary, David Glenn Hall, Gary Davis, Richard F. Watkins | 2014-07-08 |