Granted Patent
Utility
US 4,576,328 · App. 06/672,331
Hanging partition folder
Inventors:
Alan D. Snider, Andrzej L. Soporowski, Manfred O. Herbst
Patented Case
View Patent ↗
Granted: Mar 18, 1986
Filed: Nov 16, 1984
Inventors
Alan D. Snider
Andrzej L. Soporowski
Manfred O. Herbst
Assignee (at issue)
Esselte Pendaflex Corporation
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.