Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6247353 | Digital ultrasonic monitoring system and method | Rexford A. Battenberg, Terry G. Carpenter, William S. Johnson, Kenneth Ralph Piety, Kenneth Puterbaugh +1 more | 2001-06-19 |
| 6234021 | Enhanced detection of vibration | Kenneth Ralph Piety, James C. Robinson, William S. Johnson | 2001-05-22 |