Granted Patent
Utility
US 5,144,504 · App. 07/530,524
Method of controlling positioning of magnetic head of disk drive unit and disk drive unit executing same
Inventor:
Takamasa Kitazawa
Patented Case
View Patent ↗
Granted: Sep 1, 1992
Filed: May 30, 1990
Inventor
Takamasa Kitazawa
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.