Granted Patent
Utility
US 4,429,284 · App. 06/324,059
Operational amplifier
Inventor:
Carl F. Wheatley, Jr.
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Nov 23, 1981
Inventor
Carl F. Wheatley, Jr.
Assignee (at issue)
RCA 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.