Granted Patent
Utility
US 4,423,385 · App. 06/272,362
Chopper-stabilized amplifier
Inventor:
Lee L. Evans
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Jun 10, 1981
Inventor
Lee L. Evans
Assignee (at issue)
Intersil 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.