Patent Assignment
Reel/Frame 021961/0484
Assignment of Assignor's Interest
Recorded: 2008-12-11
Pages: 5
Assignors
HALPERN, IAN
Executed: 2003-03-01
PIESCIK, JOHN
Executed: 2003-03-01
SIEGRIST, JOESPH
Executed: 2003-03-03
ESTARA, INC.
Executed: 2008-05-01
Assignee
ART TECHNOLOGY GROUP, INC.
ONE MAIN STREET, CAMBRIDGE, MASSACHUSETTS, 02142
Covered Property
(1)
Packet Network Based Emergency Backup Telephone System
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.