Granted Patent
Utility
US 4,928,095 · App. 06/562,079
Active matrix-addressed picture display device
Inventor:
Yukito Kawahara
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Dec 16, 1983
Inventor
Yukito Kawahara
Assignee (at issue)
SEIKO INSTRUMENTS INC.
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.