Granted Patent
Utility
US 6,421,023 · App. 09/735,396
Phase shifter and associated method for impedance matching
Inventor:
Harry Richard Phelan
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Dec 11, 2000
Inventor
Harry Richard Phelan
Assignee (at issue)
HARRIS 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.