Granted Patent
Utility
US 6,570,979 · App. 09/133,829
Compatibility server with in-supported telephone number portablility
Inventors:
Hartmut Weik, Wolfgang Lautenschlager
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Aug 13, 1998
Inventors
Hartmut Weik
Wolfgang Lautenschlager
Assignee (at issue)
Alcatel Alsthom Compagnie Generale d'Electricite
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.