Granted Patent
Utility
US 5,345,182 · App. 07/965,795
Impedance meter capable of performing measurements at high precision over wide impedance and frequency ranges
Inventor:
Hideki Wakamatsu
Patented Case
View Patent ↗
Granted: Sep 6, 1994
Filed: Oct 23, 1992
Inventor
Hideki Wakamatsu
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.