Granted Patent
Utility
US 5,019,781 · App. 07/604,382
Source level control for impedance meter
Inventors:
Shigeru Tanimoto, Kouichi Takeuchi
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Oct 25, 1990
Inventors
Shigeru Tanimoto
Kouichi Takeuchi
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.