Granted Patent
Utility
US 5,162,809 · App. 07/601,844
Polarization independent frequency selective surface for diplexing two closely spaced frequency bands
Inventor:
Te-Kao Wu
Patented Case
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Granted: Nov 10, 1992
Filed: Oct 23, 1990
Inventor
Te-Kao Wu
Assignee (at issue)
Hughes Aircraft Company
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.