Granted Patent
Utility
US 6,591,212 · App. 09/725,136
Method for testing continuity of ISUP relay call
Inventor:
Hwa-Sung KIM
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Nov 29, 2000
Inventor
Hwa-Sung KIM
Assignee (at issue)
LG ELECTRONICS INC.
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.