Granted Patent
Utility
US 4,907,212 · App. 07/204,697
Method and apparatus for calibrating an optical disk system
Inventors:
Kenton Pharris, David L. Schell
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Jun 9, 1988
Inventors
Kenton Pharris
David L. Schell
Assignee (at issue)
Laser Magnetic Storage International Company
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.