Granted Patent
Utility
US 6,538,839 · App. 09/773,970
Disk drive employing adaptive feed-forward vibration compensation to enhance a retry operation
Inventor:
Robert P. Ryan
Patented Case
View Patent ↗
Granted: Mar 25, 2003
Filed: Jan 31, 2001
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.