Granted Patent
Utility
US 5,086,302 · App. 07/683,469
Fault isolation in a Butler matrix fed circular phased array antenna
Inventor:
George Miller
Patented Case
View Patent ↗
Granted: Feb 4, 1992
Filed: Apr 10, 1991
Inventor
George Miller
Assignee (at issue)
AlliedSignal, Inc.
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.