Granted Patent
Utility
US 4,693,280 · App. 06/842,225
End closure for shirred casing sticks
Inventor:
Robert A. Beardsley
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: Mar 21, 1986
Inventor
Robert A. Beardsley
Assignee (at issue)
Viskase Companies, 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.