Granted Patent
Utility
US 4,420,896 · App. 06/303,275
Method for fabrication of electroscopic display devices and transmissive display devices fabricated thereby
Inventor:
Donald E. Castleberry
Patented Case
View Patent ↗
Granted: Dec 20, 1983
Filed: Sep 17, 1981
Inventor
Donald E. Castleberry
Assignee (at issue)
General Electric 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.