Granted Patent
Utility
US 4,328,046 · App. 06/197,051
Chromate conversion coatings
Inventor:
Harold E. Fuchs
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Oct 14, 1980
Inventor
Harold E. Fuchs
Assignee (at issue)
Western Electric Company, Inc.
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.