Granted Patent
Utility
US 6,693,894 · App. 09/228,878
Communications network and method for directly routing calls to mobile subscribers using an internet protocol network
Inventors:
Dick Andersson, Torgny Karlsson
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Jan 12, 1999
Inventors
Dick Andersson
Torgny Karlsson
Assignee (at issue)
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
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.