Granted Patent
Utility
US 6,704,040 · App. 09/921,888
Cellular phone set and remote control method used therefor
Inventor:
Ryohei Sato
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Aug 6, 2001
Inventor
Ryohei Sato
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.