Granted Patent
Utility
US 4,609,930 · App. 06/607,418
Thin film transistor
Inventor:
Tsuneo Yamazaki
Patented Case
View Patent ↗
Granted: Sep 2, 1986
Filed: May 7, 1984
Inventor
Tsuneo Yamazaki
Assignee (at issue)
Seiko Instruments & Electronics 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.