Granted Patent
Utility
US 4,478,702 · App. 06/571,406
Anode for magnetic sputtering apparatus
Inventors:
F. Howard Gillery, Russell C. Criss
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: Jan 17, 1984
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.