Granted Patent
Utility
US 4,425,871 · App. 06/267,038
Apparatus for sensing deposition of a thin film layer of a material
Inventor:
Richard Martin
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: May 26, 1981
Inventor
Richard Martin
Assignee (at issue)
Applied Magnetics, LLC
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.