Granted Patent
Utility
US 5,140,581 · App. 07/547,250
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Inventor:
Mario Ricciardi
Patented Case
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Granted: Aug 18, 1992
Filed: Jul 3, 1990
Inventor
Mario Ricciardi
Assignee (at issue)
Bell & Howell Phillipsburg 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.