Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8840298 | Centrifugal mixing system | Calvin L. Stegemoeller, Max L. Phillippi, Stanley V. Stephenson | 2014-09-23 |
| 8347957 | System and method for servicing a wellbore | Stanley V. Stephenson, Ronald E. Dant, Max L. Phillippi | 2013-01-08 |