Granted Patent
Utility
US 5,589,847 · App. 07/764,292
Switched capacitor analog circuits using polysilicon thin film technology
Inventor:
Alan G. Lewis
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: Sep 23, 1991
Inventor
Alan G. Lewis
Assignee (at issue)
Xerox 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.