Granted Patent
Utility
US 6,519,338 · App. 09/059,135
Tone burst generator and its application to telephony
Inventor:
Martin Fornage
Patented Case
View Patent ↗
Granted: Feb 11, 2003
Filed: Apr 13, 1998
Inventor
Martin Fornage
Assignee (at issue)
Advanced Fibre Communications, Inc.
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.