Granted Patent
Utility
US 6,792,271 · App. 09/992,626
Alternative wireless telephone roaming using prepaid services
Inventors:
Stephen Sherman, Corey Feldstein
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Nov 6, 2001
Inventors
Stephen Sherman
Corey Feldstein
Assignee (at issue)
BELLSOUTH INTELLECTUAL PROPERTY 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.