Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5686924 | Local-area position navigation system with fixed pseudolite reference transmitters | Charles R. Trimble | 1997-11-11 |
| 5661652 | Mobile network with automatic position reporting between member units | David S. Sprague | 1997-08-26 |
| 5642285 | Outdoor movie camera GPS-position and time code data-logging for special effects production | David S. Sprague | 1997-06-24 |
| 5627548 | Navigation wristwear | Kiyoko M. Mura-Smith, Gregory T. Janky | 1997-05-06 |
| 5596500 | Map reading system for indicating a user's position on a published map with a global position system receiver and a database | David S. Sprague | 1997-01-21 |