Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686720 | Method and device for achieving high contrast surface illumination | — | 1997-11-11 |
| 5644139 | Navigation technique for detecting movement of navigation sensors relative to an object | Ross R. Allen, David C. Beard, Mark T. Smith | 1997-07-01 |