Granted Patent
Utility
US 4,466,875 · App. 06/556,656
Auxiliary heater for magnetron sputtering
Inventor:
F. Howard Gillery
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Nov 30, 1983
Inventor
F. Howard Gillery
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.