Granted Patent
Utility
US 6,167,040 · App. 09/327,670
Speech transmission between terminals in different networks
Inventor:
Johan Haeggström
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Jun 8, 1999
Inventor
Johan Haeggström
Assignee (at issue)
Nokia Telecommunications Oy
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.