Granted Patent
Utility
US 4,518,830 · App. 06/392,002
Armored telephone cord with a longitudinal strength member
Inventors:
Leonard H. Drexler, Richard M. Flynn, George R. Fox, Herbert C. Illium, Jr., Robert J. O'Connor
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: Jun 25, 1982
Inventors
Leonard H. Drexler
Richard M. Flynn
George R. Fox
Herbert C. Illium, Jr.
Robert J. O'Connor
Assignee (at issue)
AT&T Bell Laboratories
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.