Granted Patent
Utility
US 6,790,351 · App. 10/664,765
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Inventors:
Yongming Xia, James E. Thompson, Jeffrey S. Devine
Patented Case
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Granted: Sep 14, 2004
Filed: Sep 17, 2003
Inventors
Yongming Xia
James E. Thompson
Jeffrey S. Devine
Assignee (at issue)
Ashbrook Corporation
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.