Granted Patent
Utility
US 6,341,872 · App. 09/645,873
Electronic provided with non-light emitting display device, light guide plate and lighting device used for same
Inventor:
Youichiro Goto
Patented Case
View Patent ↗
Granted: Jan 29, 2002
Filed: Aug 25, 2000
Inventor
Youichiro Goto
Assignee (at issue)
SANYO ELECTRIC CO., LTD.
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.