Granted Patent
Utility
US 4,331,944 · App. 06/171,523
Switched-capacitor resistor simulation circuits
Inventor:
Man S. Lee
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: Jul 23, 1980
Inventor
Man S. Lee
Assignee (at issue)
GTE Automatic Electric Laboratories, Incorporated
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.