Granted Patent
Utility
US 4,533,052 · App. 06/583,556
Dual carton
Inventors:
Melvin C. Fruchey, Michael J. Kubicki
Patented Case
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Granted: Aug 6, 1985
Filed: Feb 27, 1984
Inventors
Melvin C. Fruchey
Michael J. Kubicki
Assignee (at issue)
Owens-Illinois 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.