Granted Patent
Utility
US 5,689,271 · App. 08/642,629
Method and apparatus for civilian receiver operation with P(Y) code in satellite positioning system receiver
Inventor:
Gary Lennen
Patented Case
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Granted: Nov 18, 1997
Filed: May 3, 1996
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.