Granted Patent
Utility
US 5,438,568 · App. 08/300,981
Mediation of open advanced intelligent network interface for public switched telephone network
Inventor:
Frank Weisser
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Sep 6, 1994
Inventor
Frank Weisser
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.