Granted Patent
Utility
US 6,801,504 · App. 09/316,034
Node device of ATM communication network and method of failure alarm notification
Inventor:
Toshihiko Ito
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: May 21, 1999
Inventor
Toshihiko Ito
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.