Granted Patent
Utility
US 4,863,809 · App. 07/166,215
Surface treatment for sliders and carbon coated magnetic media
Inventors:
Amarjit S. Brar, Jagdish P. Sharma
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Mar 10, 1988
Inventors
Amarjit S. Brar
Jagdish P. Sharma
Assignee (at issue)
Magnetic Peripherals, 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.