Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869097 | Sonic gas pressure gauge | John Michael Richardson, James R. Bulau, Lawrence R. Bivins | 1989-09-26 |
| 4862384 | Method of measuring the dynamic viscosity of a viscous fluid utilizing acoustic transducer | Martial R. Bujard | 1989-08-29 |