Granted Patent
Utility
US 5,352,989 · App. 08/062,810
Low input resistance amplifier stage
Inventors:
Christofer Toumazou, Martin Anding
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: May 11, 1993
Inventors
Christofer Toumazou
Martin Anding
Assignee (at issue)
Elantec, Inc.
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.