Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859864 | Sensor and method for detecting the presence of air bubbles in liquid | — | 1989-08-22 |
| 4826660 | Detector assembly for analyzer instrument | Randall Wallace Smith | 1989-05-02 |