Granted Patent
Utility
US 5,481,600 · App. 08/383,907
Instant calling card provisioning system
Inventor:
Thomas Alesio
Patented Case
View Patent ↗
Granted: Jan 2, 1996
Filed: Jan 17, 1995
Inventor
Thomas Alesio
Assignee (at issue)
AT&T CORP.
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.