Granted Patent
Utility
US 4,497,411 · App. 06/369,342
Distributing frame for telecommunications systems
Inventor:
George Debortoli
Patented Case
View Patent ↗
Granted: Feb 5, 1985
Filed: Apr 19, 1982
Inventor
George Debortoli
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.