Granted Patent
Utility
US 6,748,342 · App. 09/959,071
Method and monitoring device for monitoring the quality of data transmission over analog lines
Inventor:
Bertold Dickhaus
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Jan 18, 2002
Inventor
Bertold Dickhaus
Assignee (at issue)
Nokia
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.