IP Library Granted Patent US 4,489,284
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.

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Quick Facts
Patent No.
US 4,489,284
App. No.
06/455,048
Filed
1983-01-03
Granted
1984-12-18
Kind
A