Granted Patent
Utility
US 4,559,490 · App. 06/567,433
Method for maintaining constant bandwidth over a frequency spectrum in a dielectric resonator filter
Inventors:
Mark A. Gannon, Francis R. Yester, Jr.
Patented Case
View Patent ↗
Granted: Dec 17, 1985
Filed: Dec 30, 1983
Inventors
Mark A. Gannon
Francis R. Yester, Jr.
Assignee (at issue)
Motorola, 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.