Granted Patent
Utility
US 4,929,499 · App. 07/380,758
Use of nickel-phosphorous undercoat for particulate media in magnetic storage devices
Inventors:
Bahram Shadzi, Christopher A. Weaver
Patented Case
View Patent ↗
Granted: May 29, 1990
Filed: Jul 17, 1989
Inventors
Bahram Shadzi
Christopher A. Weaver
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.