Granted Patent
Utility
US 6,721,895 · App. 09/539,502
Data communications system and data communications method
Inventor:
Koji Manabe
Patented Case
View Patent ↗
Granted: Apr 13, 2004
Filed: Mar 30, 2000
Inventor
Koji Manabe
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.