Granted Patent
Utility
US 5,723,957 · App. 08/336,536
Method and apparatus for controlling spindle motor
Inventor:
Tetsuro Ishikawa
Patented Case
View Patent ↗
Granted: Mar 3, 1998
Filed: Nov 9, 1994
Inventor
Tetsuro Ishikawa
Assignee (at issue)
Fujitsu Limited
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.