Granted Patent
Utility
US 6,431,810 · App. 09/628,299
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Inventor:
Richard L. Weaver
Patented Case
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Granted: Aug 13, 2002
Filed: Jul 28, 2000
Inventor
Richard L. Weaver
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.