Granted Patent
Utility
US 5,285,327 · App. 08/058,348
Apparatus for controlling reading and writing in a disk drive
Inventor:
Steven R. Hetzler
Patented Case
View Patent ↗
Granted: Feb 8, 1994
Filed: May 5, 1993
Inventor
Steven R. Hetzler
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.