Granted Patent
Utility
US 4,450,368 · App. 06/332,634
AC Coupled chopper stabilized differential comparator
Inventor:
John R. Spence
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Dec 21, 1981
Inventor
John R. Spence
Assignee (at issue)
Rockwell International 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.