Granted Patent
Utility
US 5,878,031 · App. 08/972,318
Loopback mechanism for frame relay OAM
Inventors:
Khalid Ahmad, Jan Medved
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Nov 18, 1997
Inventors
Khalid Ahmad
Jan Medved
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.