Granted Patent
Utility
US 4,935,827 · App. 07/269,279
Dynamic head position tracking control for a magnetic tape playback system
Inventors:
Reginald W. Oldershaw, John Hutson
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Nov 9, 1988
Inventors
Reginald W. Oldershaw
John Hutson
Assignee (at issue)
Ampex 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.