Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888086 | Ultrasonic method | Jeffrey E. Powers, John K. Billings | 1989-12-19 |
| 4887246 | Ultrasonic apparatus, system and method | Jeffry E. Powers, John K. Billings | 1989-12-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888086 | Ultrasonic method | Jeffrey E. Powers, John K. Billings | 1989-12-19 |
| 4887246 | Ultrasonic apparatus, system and method | Jeffry E. Powers, John K. Billings | 1989-12-12 |