Granted Patent
Utility
US 4,540,472 · App. 06/677,423
Method for the electrodeposition of an iron-zinc alloy coating and bath therefor
Inventors:
William R. Johnson, Larry E. Pfister
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Dec 3, 1984
Inventors
William R. Johnson
Larry E. Pfister
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.