Granted Patent
Utility
US 4,075,430 · App. 05/686,303
Line signalling over common highway for telecommunications system
Inventor:
Jose Reines
Patented Case
View Patent ↗
Granted: Feb 21, 1978
Filed: May 14, 1976
Inventor
Jose Reines
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.