Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489771 | Passive external noise-canceling dynamic magnetic flux sensor for detecting the presence and direction of movement of a pig in a pipe | — | 2002-12-03 |
| 4876539 | Parameter telemetering from the bottom of a deep borehole | — | 1989-10-24 |
| 4788545 | Parameter telemetering from the bottom of a deep borehole | — | 1988-11-29 |
| 4620189 | Parameter telemetering from the bottom of a deep borehole | — | 1986-10-28 |