Granted Patent
Utility
US 4,969,732 · App. 07/314,020
Display device
Inventors:
Graham Wright, Mark Dempster
Patented Case
View Patent ↗
Granted: Nov 13, 1990
Filed: Feb 23, 1989
Inventors
Graham Wright
Mark Dempster
Assignee (at issue)
Thorn EMI plc
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.