Granted Patent
Utility
US 5,018,311 · App. 07/372,971
Magnetic disk burnishing method and apparatus
Inventors:
Gerald Daniel Malagrino, Jr., Dale A. Nelson
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Jun 28, 1989
Inventors
Gerald Daniel Malagrino, Jr.
Dale A. Nelson
Assignee (at issue)
International Business Machines 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.