Granted Patent
Utility
US 4,888,569 · App. 07/197,556
Magnetically tuneable millimeter wave bandpass filter having high off resonance isolation
Inventors:
Dean Nicholson, Robert J. Matreci
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: May 23, 1988
Inventors
Dean Nicholson
Robert J. Matreci
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.