Granted Patent
Utility
US 6,697,481 · App. 09/888,392
Call center system, method for receiving call, and a computer program thereof
Inventor:
Teruoki Matsumoto
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Jun 26, 2001
Inventor
Teruoki Matsumoto
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.