Granted Patent
Utility
US 4,461,040 · App. 06/456,158
Integrated single balanced mixer/oscillator with slot and hybrid coupler
Inventor:
Pierre Dobrovolny
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: Jan 6, 1983
Inventor
Pierre Dobrovolny
Assignee (at issue)
Zenith Radio 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.