Granted Patent
Utility
US 6,360,269 · App. 09/185,056
Protected keepalive message through the internet
Inventors:
Shawn Mamros, Kerry M. Hannigan
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Nov 2, 1998
Inventors
Shawn Mamros
Kerry M. Hannigan
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.