Granted Patent
Utility
US 4,466,877 · App. 06/540,363
Magnetron cathode sputtering apparatus
Inventor:
Harold E. McKelvey
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: Oct 11, 1983
Inventor
Harold E. McKelvey
Assignee (at issue)
Shatterproof Glass Corp.
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.