Granted Patent
Utility
US 4,469,719 · App. 06/332,497
Method for controlling the edge gradient of a layer of deposition material
Inventor:
Richard Martin
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Dec 21, 1981
Inventor
Richard Martin
Assignee (at issue)
Applied Magnetics-Magnetic Head Divison Corporation
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.