Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7431348 | Subsurface drill string | Don Clark, Blair K. Grover, Rodney Mathewson, Craig A. Seymour | 2008-10-07 |
| 7178391 | Insertion tube methods and apparatus | Blair K. Grover, Rodney Mathewson, Craig A. Seymour, Don Clark | 2007-02-20 |
| 6976386 | Tensiometer methods | Blair K. Grover, Joel M. Hubbell, James B. Sisson | 2005-12-20 |
| 6938503 | Lysimeter apparatus | Don Clark, Eugene E. Erickson, David M. Everett, Joel M. Hubbell, James B. Sisson | 2005-09-06 |
| 6826972 | Lysimeter methods and apparatus | Don Clark, Eugene E. Erickson, David M. Everett, Joel M. Hubbell, James B. Sisson | 2004-12-07 |
| 6820701 | Visual probes and methods for placing visual probes into subsurface areas | Don Clark, Eugene E. Erickson, David M. Everett | 2004-11-23 |
| 6772621 | Tensiometer methods and apparatus | Blair K. Grover, Joel M. Hubbell, James B. Sisson | 2004-08-10 |
| 4276733 | Method of constructing and erecting a dome-shaped structure | Michael A. Jordon, Craig S. Caulkins, Robert G. Miller | 1981-07-07 |