Granted Patent
Utility
US 4,484,338 · App. 06/314,974
Data transmission systems
Inventors:
Adrian Clark, Michael J. Fairfield
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Oct 26, 1981
Inventors
Adrian Clark
Michael J. Fairfield
Assignee (at issue)
Plessey Overseas Limited
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.