Granted Patent
Utility
US 6,526,033 · App. 09/398,589
Delivering calls to GSM subscribers roaming to CDMA networks via IP tunnels
Inventors:
Jin Wang, Patuardhana Babu Gorrepati
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: Sep 17, 1999
Inventors
Jin Wang
Patuardhana Babu Gorrepati
Assignee (at issue)
LUCENT TECHNOLOGIES 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.