Granted Patent
Utility
US 4,646,360 · App. 06/815,135
Constant bandwidth RF filter with improved low frequency attenuation
Inventor:
Max Ward Muterspaugh
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Dec 31, 1985
Inventor
Max Ward Muterspaugh
Assignee (at issue)
RCA Corporation
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.