Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5452267 | Midrange ultrasonic transducer | — | 1995-09-19 |
| 5349568 | Leak locating microphone, method and system for locating fluid leaks in pipes | David S. Kupperman | 1994-09-20 |
| 4641529 | Pipeline inspection device using ultrasonic apparatus for corrosion pit detection | Donald E. Lorenzi, Helmut F. Wagerer | 1987-02-10 |