Granted Patent
Utility
US 5,790,340 · App. 08/355,022
Head position controller of magnetic disk unit
Inventor:
Satoshi Ishii
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Dec 13, 1994
Inventor
Satoshi Ishii
Assignee (at issue)
NEC 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.