Granted Patent
Utility
US 5,523,693 · App. 08/069,920
Balanced signal source
Inventor:
Koichi Yanagawa
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Jun 1, 1993
Inventor
Koichi Yanagawa
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.