Granted Patent
Utility
US 4,891,607 · App. 07/203,230
Low distortion drive amplifier
Inventor:
Jimmie D. Felps
Patented Case
View Patent ↗
Granted: Jan 2, 1990
Filed: Jun 6, 1988
Inventor
Jimmie D. Felps
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.