Granted Patent
Utility
US 4,259,679 · App. 06/029,879
Display devices
Inventors:
Terence F. Knibb, Richard G. O'Rourke
Patented Case
View Patent ↗
Granted: Mar 31, 1981
Filed: Apr 13, 1979
Inventors
Terence F. Knibb
Richard G. O'Rourke
Assignee (at issue)
Plessey Handel Und Investments AG
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.