Granted Patent
Utility
US 5,250,835 · App. 07/812,578
Field effect type thin film transistor having a plurality of gate electrodes
Inventor:
Mitsuharu Izawa
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Dec 20, 1991
Inventor
Mitsuharu Izawa
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.