Granted Patent
Utility
US 6,664,921 · App. 09/731,167
Apparatus for receiving ranging signals
Inventor:
Anthony Richard Pratt
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Dec 6, 2000
Inventor
Anthony Richard Pratt
Assignee (at issue)
Parthus (UK) 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.