Granted Patent
Utility
US 5,812,640 · App. 08/592,286
System and method for using alternative switch announcements in advanced intelligent network services
Inventors:
Sandeep Chawla, John G. Cameron, Jr.
Patented Case
View Patent ↗
Granted: Sep 22, 1998
Filed: Jan 26, 1996
Inventors
Sandeep Chawla
John G. Cameron, Jr.
Assignee (at issue)
BellSouth 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.