Granted Patent
Utility
US 4,489,284 · App. 06/455,048
Operational amplifier circuit for NMOS chip
Inventors:
Albert J. Charpentier, James Redfield
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Jan 3, 1983
Inventors
Albert J. Charpentier
James Redfield
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.