Granted Patent
Utility
US 6,298,352 · App. 09/121,393
Apparatus and method for managing number sources
Inventors:
Sivaramakrishna Kannan, Dan M. Parkins
Patented Case
View Patent ↗
Granted: Oct 2, 2001
Filed: Jul 23, 1998
Inventors
Sivaramakrishna Kannan
Dan M. Parkins
Assignee (at issue)
MCI Communications Corporation
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.