Granted Patent
Utility
US 4,933,642 · App. 07/312,691
CMOS chopper-stabilized operational amplifier using two differential amplifier pairs as input stages
Inventor:
Minru Lee
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Feb 17, 1989
Inventor
Minru Lee
Assignee (at issue)
Linear Technology Holding 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.