Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838127 | Ultrasonic flow meter | Christiaan J. Hoogendijk, Adriaan Hendrik Boer, Aart Jan van Bekkum | 1989-06-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838127 | Ultrasonic flow meter | Christiaan J. Hoogendijk, Adriaan Hendrik Boer, Aart Jan van Bekkum | 1989-06-13 |