Granted Patent
Utility
US 4,388,645 · App. 06/253,330
Teletext communication system with timed multipage local memory
Inventors:
Charles Cox, William L. Thomas
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Apr 13, 1981
Inventors
Charles Cox
William L. Thomas
Assignee (at issue)
Zenith Radio Corporation
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.