Granted Patent
Utility
US 6,788,674 · App. 09/910,679
Method and apparatus for establishing a collect call originated through a packet based network
Inventors:
Murali M. Karamchedu, Jeffrey B. Sponaugle
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Jul 20, 2001
Inventors
Murali M. Karamchedu
Jeffrey B. Sponaugle
Assignee (at issue)
ITXC, 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.