Granted Patent
Utility
US 4,714,641 · App. 06/707,995
Ferromagnetic films for high density recording and methods of production
Inventor:
Bernhard F. Cordts, III
Patented Case
View Patent ↗
Granted: Dec 22, 1987
Filed: Mar 4, 1985
Inventor
Bernhard F. Cordts, III
Assignee (at issue)
Varian, 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.