Granted Patent
Utility
US 5,838,390 · App. 08/577,652
System and method for multi-level gain control
Inventors:
Robert J. Hankinson, Scott William Curry
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Dec 22, 1995
Inventors
Robert J. Hankinson
Scott William Curry
Assignee (at issue)
Cirrus Logic 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.