Granted Patent
Utility
US 5,490,212 · App. 08/289,782
Call-routing method for a virtual private network as well as service computer and exchange therefor
Inventor:
Wolfgang Lautenschlager
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Aug 12, 1994
Inventor
Wolfgang Lautenschlager
Assignee (at issue)
Alcatel Sel Aktiengesellschaft
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.