Granted Patent
Utility
US 6,584,562 · App. 09/209,960
Device for securing a telephone link between two subscriber sets
Inventor:
Costantino Fiori
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Dec 10, 1998
Inventor
Costantino Fiori
Assignee (at issue)
FRANCE TELECOM
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.