Granted Patent
Utility
US 5,509,010 · App. 08/082,654
Communications signaling protocols
Inventors:
Thomas F. La Porta, Malathi Veeraraghavan
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Jun 25, 1993
Inventors
Thomas F. La Porta
Malathi Veeraraghavan
Assignee (at issue)
AT&T CORP.
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.