Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826972 | Lysimeter methods and apparatus | Don Clark, Eugene E. Erickson, William L. Casper, 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, William L. Casper | 2004-11-23 |