Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872336 | Apparatus for pressure testing pipelines | — | 1989-10-10 |
| 4862601 | Particulate solids dryer with recycled hot-pebble heat exchange medium | — | 1989-09-05 |
| 4813270 | System for measuring multiphase fluid flow | — | 1989-03-21 |
| 4809543 | Apparatus and method for monitoring one liquid in another | — | 1989-03-07 |