Granted Patent
Utility
US 4,939,731 · App. 07/220,214
Data transmission system with automatic repeat request
Inventors:
Allyson P. C. Reed, Jonathan Hopkinson
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Sep 29, 1988
Inventors
Allyson P. C. Reed
Jonathan Hopkinson
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.