Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888996 | DC motor operated valve remote monitoring system | T. Mark Whitaker | 1989-12-26 |
| 4869102 | Method and apparatus for remote monitoring of valves and valve operators | Stanley N. Hale, Duane H. Rowicki, Chin P. Ho | 1989-09-26 |
| 4852416 | Ultrasonic testing system with variable angle transducer mount | Bruce T. Boone, Steven Nafziger, John A. McMennamy | 1989-08-01 |