Granted Patent
Utility
US 4,488,293 · App. 06/334,006
Asynchronous digital TDM multiplexer-demultiplexer combination
Inventors:
Robert H. Haussmann, Stuart B. Cohen, Arthur L. Bandini
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Dec 23, 1981
Inventors
Robert H. Haussmann
Stuart B. Cohen
Arthur L. Bandini
Assignee (at issue)
International Telephone and Telegraph 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.