Granted Patent
Utility
US 5,384,021 · App. 08/104,277
Sputtering apparatus
Inventor:
Michael J. Thwaites
Patented Case
View Patent ↗
Granted: Jan 24, 1995
Filed: Aug 10, 1993
Inventor
Michael J. Thwaites
Assignee (at issue)
The BOC Group plc
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.