Granted Patent
Utility
US 5,646,536 · App. 08/504,181
Method for calibrating circuit network measurement devices
Inventor:
Atsushi Ishihara
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Jul 19, 1995
Inventor
Atsushi Ishihara
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.