Granted Patent
Utility
US 4,615,926 · App. 06/632,701
Film and package having strong seals and a modified ply-separation opening
Inventors:
Joseph C. Hsu, Anthony C. Guckenberger
Patented Case
View Patent ↗
Granted: Oct 7, 1986
Filed: Jul 20, 1984
Inventors
Joseph C. Hsu
Anthony C. Guckenberger
Assignee (at issue)
American Can Company
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.