Granted Patent
Utility
US 5,990,629 · App. 09/013,708
Electroluminescent display device and a driving method thereof
Inventors:
Hiroyasu Yamada, Masaharu Shioya
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Jan 26, 1998
Inventors
Hiroyasu Yamada
Masaharu Shioya
Assignee (at issue)
CASIO COMPUTER 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.