Granted Patent
Utility
US 6,765,995 · App. 09/613,305
Telephone system and telephone method
Inventor:
Yoshikazu Kobayashi
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Jul 10, 2000
Inventor
Yoshikazu Kobayashi
Assignee (at issue)
NEC INFRONTIA 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.