Granted Patent
Utility
US 5,867,813 · App. 08/431,414
Method and apparatus for automatically and reproducibly rating the transmission quality of a speech transmission system
Inventors:
Gianni Di Pietro, Ziemowit Zglinski
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: May 1, 1995
Inventors
Gianni Di Pietro
Ziemowit Zglinski
Assignee (at issue)
Ascom Infrasys AG
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.