Granted Patent
Utility
US 5,963,393 · App. 09/032,286
Servo-free velocity estimator for coil driven actuator arm in a data storage drive
Inventors:
Bryan Scott Rowan, Louis J. Serrano
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Feb 26, 1998
Inventors
Bryan Scott Rowan
Louis J. Serrano
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.