Granted Patent
Utility
US 4,662,001 · App. 06/766,161
Tunable notch filter for image frequency and conducted local oscillator leakage rejection
Inventors:
Michael Cruz, Harmon P. Vaughter
Patented Case
View Patent ↗
Granted: Apr 28, 1987
Filed: Aug 15, 1985
Inventors
Michael Cruz
Harmon P. Vaughter
Assignee (at issue)
Zenith Electronics LLC
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.