Granted Patent
Utility
US 6,606,668 · App. 09/154,536
System and method for least cost routing and managing multiple gatekeepers on a packet switched network
Inventors:
Patrick J. MeLampy, Robert Penfield
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Sep 16, 1998
Inventors
Patrick J. MeLampy
Robert Penfield
Assignee (at issue)
Priority Call Management, 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.