Granted Patent
Utility
US 4,835,633 · App. 07/097,778
Disk file digital servo control system with compensation for variation in actuator acceleration factor
Inventors:
Stephen F. Edel, Michael L. Workman, Kenneth G. Yamamoto, Mantle Man-Hon Yu
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Sep 16, 1987
Inventors
Stephen F. Edel
Michael L. Workman
Kenneth G. Yamamoto
Mantle Man-Hon Yu
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.