Granted Patent
Utility
US 4,240,848 · App. 05/922,187
System for alphabetically labelling articles
Inventor:
Donald T. Barber
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Jul 5, 1978
Inventor
Donald T. Barber
Assignee (at issue)
Datafile Limited
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.