Granted Patent
Utility
US 6,693,801 · App. 10/331,767
Electronic device
Inventor:
Kanji Otsuka
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Dec 31, 2002
Inventor
Kanji Otsuka
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.