Granted Patent
Utility
US 4,380,828 · App. 06/267,136
UHF MOSFET Mixer
Inventor:
Frederick H. Moon
Patented Case
View Patent ↗
Granted: Apr 19, 1983
Filed: May 26, 1981
Inventor
Frederick H. Moon
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.