Granted Patent
Utility
US 5,245,477 · App. 07/960,813
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Inventor:
Morton Nyman
Patented Case
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Granted: Sep 14, 1993
Filed: Oct 14, 1992
Inventor
Morton Nyman
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.