Granted Patent
Utility
US 5,467,340 · App. 08/180,913
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Inventor:
Akira Umezu
Patented Case
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Granted: Nov 14, 1995
Filed: Jan 12, 1994
Inventor
Akira Umezu
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.