Granted Patent
Utility
US 5,933,764 · App. 08/861,771
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Inventor:
Hideyuki Katayama
Patented Case
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Granted: Aug 3, 1999
Filed: May 22, 1997
Inventor
Hideyuki Katayama
Assignee (at issue)
NEC 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.