Granted Patent
Utility
US 5,011,880 · App. 07/347,131
Fire retardent and water blocking filling compositions for cables
Inventors:
Jacques Cornibert, Jorg-Hein Walling
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: May 4, 1989
Inventors
Jacques Cornibert
Jorg-Hein Walling
Assignee (at issue)
Nortel Networks Limited
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.