Granted Patent
Utility
US 4,380,047 · App. 06/209,903
Interface apparatus employing a video tape drive to back-up a disc drive and including error detecting and correcting circuitry
Inventors:
Bruce T. Eisenhard, Mark Hahn
Patented Case
View Patent ↗
Granted: Apr 12, 1983
Filed: Nov 24, 1980
Inventors
Bruce T. Eisenhard
Mark Hahn
Assignee (at issue)
Corvus Systems, Inc.
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.