Granted Patent
Utility
US 4,871,903 · App. 07/080,123
Apparatus for rapidly accessing a large data base employing an optical disc reading system with multiple heads and track position compensation means
Inventor:
Ross M. Carrell
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: Jul 31, 1987
Inventor
Ross M. Carrell
Assignee (at issue)
General Electric 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.