Granted Patent
Utility
US 6,731,651 · App. 09/333,608
Voice relaying apparatus and voice relaying method
Inventor:
Noboru Tatsuki
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Jun 15, 1999
Inventor
Noboru Tatsuki
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.