Granted Patent
Utility
US 6,213,520 · App. 09/443,598
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Inventors:
Carl W. Treleaven, Glenn A. Grosskopf
Patented Case
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Granted: Apr 10, 2001
Filed: Nov 19, 1999
Inventors
Carl W. Treleaven
Glenn A. Grosskopf
Assignee (at issue)
Pharmagraphics (Midwest), L.L.C.
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.