Granted Patent
Utility
US 4,240,925 · App. 05/930,280
Inhibition of pitting corrosion
Inventor:
William Stephen Tait
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Aug 2, 1978
Inventor
William Stephen Tait
Assignee (at issue)
Petrolite Corporation
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.