Granted Patent
Utility
US 5,711,411 · App. 08/557,748
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Inventor:
William Joseph Zurweller
Patented Case
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Granted: Jan 27, 1998
Filed: Nov 13, 1995
Inventor
William Joseph Zurweller
Assignee (at issue)
Lever Brothers Company, division of Conopco, Inc.
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.