Granted Patent
Utility
US 5,012,363 · App. 07/305,268
Servo pattern writing method for a disk storage device
Inventors:
Shingi Mine, Yoichi Miwa, Hiroyuki Ono
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Feb 1, 1989
Inventors
Shingi Mine
Yoichi Miwa
Hiroyuki Ono
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.