Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884099 | Automatic adjustment of focal length to obtain desired optical reduction ratio in a microfilm camera | — | 1989-11-28 |
| 4866477 | Automatic lens selection for desired optical reduction ratio in a microfilm camera | Robert V. Barry | 1989-09-12 |
| 4806958 | Cassette/machine optically coupled interface | David Momot | 1989-02-21 |
| 4806959 | Cassette orientation detection apparatus | — | 1989-02-21 |
| 4806960 | Cassette information controller and memory | David Momot, Michael W. LaCourt | 1989-02-21 |