Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9429008 | Measuring torque in a downhole environment | — | 2016-08-30 |
| 9187955 | Locking clutch for downhole motor | Lance D. Underwood | 2015-11-17 |
| 8836474 | Electronic access memory device and access point control | Roger Keith Russell, Ralph P. Palmer | 2014-09-16 |
| 8776915 | Locking clutch for downhole motor | Lance D. Underwood | 2014-07-15 |
| 8487742 | Electronic token and lock | Roger Keith Russell, Ralph P. Palmer | 2013-07-16 |
| 7735581 | Locking clutch for downhole motor | Lance D. Underwood | 2010-06-15 |
| 7448455 | Turbodrill with asymmetric stator and rotor vanes | Mark Natanael, Kenneth M. Nevlud, Timothy P. Beaton | 2008-11-11 |
| 7316140 | Electronic token and lock core | Roger Keith Russell, Ralph P. Palmer | 2008-01-08 |
| 7191624 | Vending machine lock | Ralph P. Palmer, John W. McIntire | 2007-03-20 |
| 6840072 | Electronic token and lock core | Roger Keith Russell, Ralph P. Palmer | 2005-01-11 |
| 6684671 | Vending machine lock | Ralph P. Palmer, John W. McIntire | 2004-02-03 |
| 6668606 | Electronic token lock core | Roger Keith Russell, Ralph P. Palmer | 2003-12-30 |
| 6442986 | Electronic token and lock core | Roger Keith Russell, Ralph P. Palmer | 2002-09-03 |