Granted Patent
Utility
US 4,902,638 · App. 07/342,355
Thin film transistor, method of repairing the thin film transistor and display apparatus having the thin film transistor
Inventor:
Ryujiro Muto
Patented Case
View Patent ↗
Granted: Feb 20, 1990
Filed: Apr 24, 1989
Inventor
Ryujiro Muto
Assignee (at issue)
ASAHI GLASS 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.