Granted Patent
Utility
US 4,839,593 · App. 07/133,952
Transient electromagnetic method for directly detecting corrosion on conductive containers
Inventor:
Brian R. Spies
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Dec 17, 1987
Inventor
Brian R. Spies
Assignee (at issue)
Atlantic Richfield Company
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.