Granted Patent
Utility
US 4,655,358 · App. 06/242,325
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Inventor:
Leslie K. Kaffko
Patented Case
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Granted: Apr 7, 1987
Filed: Mar 10, 1981
Inventor
Leslie K. Kaffko
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.