Granted Patent
Utility
US 4,488,290 · App. 06/405,103
Distributed digital exchange with improved switching system and input processor
Inventors:
James E. Dunn, Colin Bradbury, Kenneth R. Holmes, Stephen W. Treadwell
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Aug 4, 1982
Inventors
James E. Dunn
Colin Bradbury
Kenneth R. Holmes
Stephen W. Treadwell
Assignee (at issue)
M/A-COM Linkabit, 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.