Granted Patent
Utility
US 4,658,367 · App. 06/644,405
Noise corrected pole and zero analyzer
Inventor:
Ronald W. Potter
Patented Case
View Patent ↗
Granted: Apr 14, 1987
Filed: Aug 23, 1984
Inventor
Ronald W. Potter
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.