Granted Patent
Utility
US 6,400,856 · App. 09/666,178
Polarization diversity double resonator channel-dropping filter
Inventor:
Mee Koy Chin
Patented Case
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Granted: Jun 4, 2002
Filed: Sep 21, 2000
Inventor
Mee Koy Chin
Assignee (at issue)
INNOVACTION TECHNOLOGIES
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.