Granted Patent
Utility
US 5,153,786 · App. 07/502,070
Extended range servo system for positioning a disk drive head over a selected track
Inventor:
Michael D. Sidman
Patented Case
View Patent ↗
Granted: Oct 6, 1992
Filed: Mar 1, 1991
Inventor
Michael D. Sidman
Assignee (at issue)
Digital Equipment 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.