Granted Patent
Utility
US 4,450,554 · App. 06/291,690
Asynchronous integrated voice and data communication system
Inventors:
Peter D. Steensma, Murray Weinberg, Robert Smid, Thomas E. Finley
Patented Case
View Patent ↗
Granted: May 22, 1984
Filed: Aug 10, 1981
Inventors
Peter D. Steensma
Murray Weinberg
Robert Smid
Thomas E. Finley
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.