Granted Patent
Utility
US 4,281,445 · App. 06/053,561
Apparatus and method for replacement of file folders having fasteners
Inventors:
Donald T. Barber, George B. Pfeffer, Esther E. Olson
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Jul 5, 1979
Inventors
Donald T. Barber
George B. Pfeffer
Esther E. Olson
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.