Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5417107 | Method and capacitance probe arrangement | John A. Devries | 1995-05-23 |
| 5363696 | Method and arrangement for oil well test system | David Cardellini, Jeffrey P. Taylor, John A. Haeber, John A. DeVires | 1994-11-15 |