Granted Patent
Utility
US 6,476,996 · App. 09/505,009
Disk drive comprising an actuator driver circuit for retracting a head independent of a servo microprocessor when a spindle speed fault mode is detected
Inventor:
Robert P. Ryan
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Feb 15, 2000
Inventor
Robert P. Ryan
Assignee (at issue)
WESTERN DIGITAL TECHNOLOGIES, INC.
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.