Granted Patent
Utility
US 4,196,475 · App. 05/719,810
Method of and apparatus for automatic measurement of impedance or other parameters with microprocessor calculation techniques
Inventor:
Henry P. Hall
Patented Case
View Patent ↗
Granted: Apr 1, 1980
Filed: Sep 2, 1976
Inventor
Henry P. Hall
Assignee (at issue)
Genrad, Inc.
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.