Granted Patent
Utility
US 5,779,818 · App. 08/611,679
Process for the production of corrosion-protected metallic materials and materials obtainable therewith
Inventor:
Bernhard Wessling
Patented Case
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Granted: Jul 14, 1998
Filed: Mar 6, 1996
Inventor
Bernhard Wessling
Assignee (at issue)
Zipperling Kessler & Co. (GmbH & Co.)
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.