Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5001434 | Variable mode microwave water cut monitor and method | John D. Marrelli | 1991-03-19 |
| 4977377 | Microwave water cut monitor with temperature controlled test cell | Michael G. Durrett, David A. Helms, Gregory J. Hatton, Earl L. Dowty, John D. Marrelli +1 more | 1990-12-11 |