Patent Assignment
Reel/Frame 015125/0761
Assignment of Assignor's Interest
Recorded: 2004-03-22
Pages: 7
Assignors
BIRRELL, ANDREW D.
Executed: 2004-03-22
BURROWS, MICHAEL
Executed: 2004-03-22
WOBBER, EDWARD PEARCE
Executed: 2004-03-22
Assignee
MICROSOFT CORPORATION
ONE MICROSOFT WAY, REDMOND, WASHINGTON, 98052
Covered Property
(1)
Cryptographic Puzzle Cancellation Service for Deterring Bulk Electronic Mail Messages
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.