Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5060414 | Phytotoxicity of a combined RF and microwave electromagnetic field | — | 1991-10-29 |
| 4891969 | Oil/water ratio measurement | Caroline H. Persson-Reeves | 1990-01-09 |
| 4658208 | Downhole steam quality measurement | David O. Lee, Paul C. Montoya, James F. Muir | 1987-04-14 |
| 4616184 | CSAMT method for determining depth and shape of a sub-surface conductive object | David O. Lee, Paul C. Montoya | 1986-10-07 |