Granted Patent
Utility
US 4,682,039 · App. 06/351,952
Photoelectric tape profile detector for file security
Inventor:
Herbert U. Ragle
Patented Case
View Patent ↗
Granted: Jul 21, 1987
Filed: Feb 24, 1982
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.