Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10318217 | Implementation method of virtual print-out system | Ming-Cheng Ho, Yi-Han Chang, Pei Ding, Teng-Hao Chang, Tien-Che Tsai +1 more | 2019-06-11 |
| RE41359 | Housing portion and a faceplate portion of a portable hand-held navigational device | David Laverick, Brian G. Schoenfish | 2010-06-01 |
| 7483789 | Systems and methods with integrated triangulation positioning and dead reckoning capabilities | Thomas H. Walters, Cliff Pemble | 2009-01-27 |
| 6980906 | Systems and methods for a navigational device with forced layer switching based on memory constraints | Michael Childs, Darin J. Beesley | 2005-12-27 |
| 6898520 | Systems and methods for a navigational device with forced layer switching based on memory constraints | Michael Childs, Darin J. Beesley | 2005-05-24 |
| 6850844 | Portable navigation device with integrated GPS and dead reckoning capabilities | Thomas H. Walters, Cliff Pemble | 2005-02-01 |
| 6801855 | Systems and methods with integrated GPS and dead reckoning capabilities | Thomas H. Walters, Cliff Pemble | 2004-10-05 |
| 6775612 | Navigation PDA and method with optimal antenna placement | Michael Childs, Darin J. Beesley | 2004-08-10 |
| D429173 | Button controls for a portable hand-held navigational device | David Laverick, Brian G. Schoenfish | 2000-08-08 |
| D427919 | Portable hand-held navigational device | David Laverick, Brian G. Schoenfish | 2000-07-11 |
| 5198831 | Personal positioning satellite navigator with printed quadrifilar helical antenna | Gary L. Burrell, Paul K. Shumaker | 1993-03-30 |
| D329988 | Personal navigator instrument | Gary L. Burrell | 1992-10-06 |