Granted Patent
Utility
US 4,338,571 · App. 06/105,004
Low sensitivity switched-capacitor ladder filter using monolithic MOS chip
Inventor:
Ian A. Young
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Dec 18, 1979
Inventor
Ian A. Young
Assignee (at issue)
Mostek 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.