Granted Patent
Utility
US 4,568,894 · App. 06/567,437
Dielectric resonator filter to achieve a desired bandwidth characteristic
Inventors:
Mark A. Gannon, Francis R. Yester, Jr.
Patented Case
View Patent ↗
Granted: Feb 4, 1986
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.