Granted Patent
Utility
US 6,587,986 · App. 09/473,188
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Inventors:
Akihiro Kanazawa, Morihisa Momona
Patented Case
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Granted: Jul 1, 2003
Filed: Dec 28, 1999
Inventors
Akihiro Kanazawa
Morihisa Momona
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.