Granted Patent
Utility
US 6,816,587 · App. 09/609,368
Virtual private line connection system and method
Inventors:
Takeo Orui, Takashi Okumura
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Jul 3, 2000
Inventors
Takeo Orui
Takashi Okumura
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.