Granted Patent
Utility
US 6,072,428 · App. 09/090,100
Location determination using doppler and pseudorange measurements from fewer than four satellites
Inventors:
John F. Schipper, Mark Wilson
Patented Case
View Patent ↗
Granted: Jun 6, 2000
Filed: Jun 3, 1998
Inventors
John F. Schipper
Mark Wilson
Assignee (at issue)
Trimble Navigation Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.