| 10654151 |
Welding fixture and welding method using welding fixture |
Guangzhao Yang, Tianxiao ZHAO, Ruifeng Yang, Zijian Wang, Libao Cui +3 more |
2020-05-19 |
| 9599721 |
Method and system for estimating position with bias compensation |
Liwen L. Dai |
2017-03-21 |
| 8803736 |
Method and system for estimating position with bias compensation |
Liwen L. Dai |
2014-08-12 |
| 8766848 |
Method and system for estimating position using dual real time kinematic engines |
Liwen L. Dai, Daniel J. Eslinger |
2014-07-01 |
| 8427365 |
Method and system for estimating position using dual real time kinematic engines |
Liwen L. Dai, Daniel J. Eslinger |
2013-04-23 |
| 7961141 |
Methods and systems to increase accuracy in the navigation of single frequency receivers |
Liwen L. Dai, Daniel J. Eslinger, John Perry Genta |
2011-06-14 |
| 7679555 |
Navigation receiver and method for combined use of a standard RTK system and a global carrier-phase differential positioning system |
Liwen L. Dai, Daniel J. Eslinger, Ronald R. Hatch, Richard Sharpe |
2010-03-16 |