Granted Patent
Utility
US 4,390,969 · App. 06/142,608
Asynchronous data transmission system with state variable memory and handshaking protocol circuits
Inventor:
Alan Hayes
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Apr 21, 1980
Inventor
Alan Hayes
Assignee (at issue)
Burroughs, Inc.
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.