Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883952 | Optical birefringment parameter measuring sensor | — | 1989-11-28 |
| 4880970 | Optical sensors for measurement of a variable parameter | — | 1989-11-14 |
| 4835384 | Device and method for determining displacement using colored transparent spheres | James Moruzzi, Akkanapragada N. Prasad | 1989-05-30 |
| 4814601 | Optical displacement sensor using color variations to monitor displacement of two gratings. | — | 1989-03-21 |