Granted Patent
Utility
US 4,954,790 · App. 07/437,510
Enhanced coupled, even mode terminated baluns, and mixers and modulators constructed therefrom
Inventor:
Richard Gordon Barber
Patented Case
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Granted: Sep 4, 1990
Filed: Nov 15, 1989
Inventor
Richard Gordon Barber
Assignee (at issue)
Avantek, 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.