Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843884 | Method and system for ultrasonic detection of flaws in test objects | James F. Mank, Thomas A. Pettenski, William J. Williams, Donald T. Hayford | 1989-07-04 |
| 4832532 | Apparatus for determining liquid/gas interfaces | Senapati Nagabhusan, Ralph E. Beard, John R. Myers | 1989-05-23 |