Granted Patent
Utility
US 4,692,389 · App. 06/840,259
Stainless steel overcoat for sputtered films
Inventors:
F. Howard Gillery, Russell C. Criss
Patented Case
View Patent ↗
Granted: Sep 8, 1987
Filed: Mar 17, 1986
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.