Granted Patent
Utility
US 6,721,413 · App. 09/478,358
Method and apparatus for observing and controlling a multi-layered communication network
Inventor:
Hiroyuki Kawakami
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Jan 6, 2000
Inventor
Hiroyuki Kawakami
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.