Granted Patent
Utility
US 5,708,439 · App. 08/544,996
Method and apparatus for observing unknown codes on satellite positioning system
Inventor:
Gary Lennen
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Oct 30, 1995
Inventor
Gary Lennen
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.