Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8418782 | Method and system for precise drilling guidance of twin wells | Edwin L. Meador | 2013-04-16 |
| 7940041 | Method of determining the amount of travel of a rotating component | Michael Charles Spalding | 2011-05-10 |
| 7728583 | Apparatus for monitoring rotary machines | Michael Charles Spalding | 2010-06-01 |
| 7475741 | Method and system for precise drilling guidance of twin wells | — | 2009-01-13 |
| 5230387 | Downhole combination tool | George F. Roberts, Philip H. Walters, Howard C. Clark, Don D. Fitzgerald, Otis V. Stelly, II | 1993-07-27 |
| 5064006 | Downhole combination tool | George F. Roberts, Philip H. Walters, Howard C. Clark, Don D. Fitzgerald, Otis V. Stelly, II | 1991-11-12 |