Granted Patent
Utility
US 4,517,325 · App. 06/541,613
Corrosion resistant core-plate and coatings therefor
Inventor:
Bruno M. Perfetti
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Oct 13, 1983
Inventor
Bruno M. Perfetti
Assignee (at issue)
United States Steel 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.