Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850691 | Method and apparatus for determining pupillary response parameters | Kirk Schroeder, Richard Kast | 1989-07-25 |
| 4650334 | Optical straightness gauge and method | Louis G. Alster | 1987-03-17 |
| 4364663 | Surface roughness gauge and method | William E. Streight | 1982-12-21 |