Granted Patent
Utility
US 4,989,956 · App. 07/293,875
Visual display device with fluorescent dye-doped edge-illuminating emitter panel
Inventors:
Wei Wu, Tsung-Yuan Hsu, Anna M. Lackner, Willis H. Smith, Jr.
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Jan 4, 1989
Inventors
Wei Wu
Tsung-Yuan Hsu
Anna M. Lackner
Willis H. Smith, Jr.
Assignee (at issue)
Hughes Aircraft Company
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.