Granted Patent
Utility
US 4,523,159 · App. 06/566,237
Microwave oscillator and single balanced mixer for satellite television receiver
Inventor:
Pierre Dobrovolny
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Dec 28, 1983
Inventor
Pierre Dobrovolny
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.