Granted Patent
Utility
US 4,308,086 · App. 06/153,403
Apparatus for the preparation of hollow plastic articles with a base cup
Inventor:
Emery I. Valyi
Patented Case
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Granted: Dec 29, 1981
Filed: May 27, 1980
Inventor
Emery I. Valyi
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.