Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4254330 | Low frequency enhancement range finding equipment | Dennis J. Wilwerding | 1981-03-03 |
| 4249073 | Method and apparatus for determining focus position | Dennis J. Wilwerding | 1981-02-03 |
| 4247763 | Grid scan range finding apparatus | — | 1981-01-27 |
| 4246476 | Automatic focusing apparatus for use with a plurality of lenses | — | 1981-01-20 |
| 4230941 | Corrector lens | — | 1980-10-28 |
| 4230942 | Crossed cylindrical lens | — | 1980-10-28 |
| 4184968 | Auto focus system | — | 1980-01-22 |
| 4185191 | Range determination system | — | 1980-01-22 |