Granted Patent
Utility
US 4,160,171 · App. 05/822,079
Method and apparatus for determining the reference voltage in an impressed current corrosion protection system
Inventor:
Larry H. Merrick
Patented Case
View Patent ↗
Granted: Jul 3, 1979
Filed: Aug 5, 1977
Inventor
Larry H. Merrick
Assignee (at issue)
HARCO, LLC
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.