Granted Patent
Utility
US 4,283,215 · App. 05/862,270
Two-piece bottom plate for making crown bottom glassware on the HE-28 machines
Inventor:
James E. Sherman
Patented Case
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Granted: Aug 11, 1981
Filed: Dec 20, 1977
Inventor
James E. Sherman
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.