Granted Patent
Utility
US 6,484,444 · App. 09/713,159
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Inventor:
Allen D. Polowinczak
Patented Case
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Granted: Nov 26, 2002
Filed: Nov 14, 2000
Inventor
Allen D. Polowinczak
Assignee (at issue)
Ashland Products, 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.