Granted Patent
Utility
US 5,825,857 · App. 08/527,560
Method and system for calling card validation hubbing
Inventors:
Luis Reto, Don Turner, Timothy Darland, Anis Khalil, Cory Lenger, Amyn Merchant
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Sep 13, 1995
Inventors
Luis Reto
Don Turner
Timothy Darland
Anis Khalil
Cory Lenger
Amyn Merchant
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.