Granted Patent
Utility
US 4,873,748 · App. 07/229,661
Burnished end shirred casing stick, method and apparatus
Inventors:
John J. Evyan, Orville D. Booth
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Aug 8, 1988
Inventors
John J. Evyan
Orville D. Booth
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.