Granted Patent
Utility
US 6,639,552 · App. 09/941,614
Method of and apparatus for deriving a signal for enabling a radio wave source location to be derived
Inventor:
David T. Carrott
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Aug 30, 2001
Inventor
David T. Carrott
Assignee (at issue)
NORTHROP GRUMMAN CORPORATION
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.