Granted Patent
Utility
US 4,965,539 · App. 07/360,312
Microwave notch filter using pin diode shunted YIG resonators
Inventor:
Marinus L. Korber, Jr.
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Jun 2, 1989
Inventor
Marinus L. Korber, Jr.
Assignee (at issue)
Watkins-Johnson Company, 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.