Granted Patent
Utility
US 4,337,659 · App. 06/053,304
Computer tape and reel signature for computer data file security
Inventor:
Herbert U. Ragle
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Jun 29, 1979
Inventor
Herbert U. Ragle
Assignee (at issue)
Burroughs, 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.