Granted Patent
Utility
US 6,078,461 · App. 08/873,373
In situ offset correction for position error signal
Inventors:
Gordon James Smith, Hal Hjalmar Ottesen
Patented Case
View Patent ↗
Granted: Jun 20, 2000
Filed: Jun 12, 1997
Inventors
Gordon James Smith
Hal Hjalmar Ottesen
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.