Granted Patent
Utility
US 4,594,137 · App. 06/530,570
Stainless steel overcoat for sputtered films
Inventors:
F. Howard Gillery, Russell C. Criss
Patented Case
View Patent ↗
Granted: Jun 10, 1986
Filed: Sep 9, 1983
Inventors
F. Howard Gillery
Russell C. Criss
Assignee (at issue)
PPG Industries, 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.