Granted Patent
Utility
US 5,440,474 · App. 08/150,939
Magnetic recording disk with equally-spaced servo sectors extending across multiple data bands
Inventor:
Steven R. Hetzler
Patented Case
View Patent ↗
Granted: Aug 8, 1995
Filed: Nov 10, 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.