Granted Patent
Utility
US 6,484,263 · App. 09/239,322
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Inventor:
Te-Kai Liu
Patented Case
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Granted: Nov 19, 2002
Filed: Jan 28, 1999
Inventor
Te-Kai Liu
Assignee (at issue)
International Business Machines 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.