Granted Patent
Utility
US 4,445,213 · App. 06/341,840
Communication line interface for controlling data information having differing transmission characteristics
Inventors:
Charles R. Baugh, Robert M. Smith
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: Jan 22, 1982
Inventors
Charles R. Baugh
Robert M. Smith
Assignee (at issue)
Bell Telephone Laboratories, 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.