Granted Patent
Utility
US 4,421,622 · App. 06/419,988
Method of making sputtered coatings
Inventor:
Dennis R. Hollars
Patented Case
View Patent ↗
Granted: Dec 20, 1983
Filed: Sep 20, 1982
Inventor
Dennis R. Hollars
Assignee (at issue)
Advanced Coating Technology, 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.