Granted Patent
Utility
US 5,209,468 · App. 07/835,412
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Inventors:
James N. Driscoll, Michael R. Drago
Patented Case
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Granted: May 11, 1993
Filed: Feb 14, 1992
Inventors
James N. Driscoll
Michael R. Drago
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.