Assignment of Assignor's Interest

Recorded: 2005-09-13 Pages: 4

Assignors

HALL, H. TRACY

Executed: 2005-09-01

DAHLGREN, SCOTT

Executed: 2005-09-07

COX, DALE

Executed: 2005-09-12

Assignee

HALL, DAVID R.

2185 SOUTH LARSEN PARKWAY, PROVO, UTAH, 84606

Covered Property (1)

Downhole Seismic-Sonic Receiver

Patent: 7,252,174 →

Application: 11/162,505 →

Publication: US 2007/0056795

Related Assignments (2)

Other recorded transfers of the patent in this record — the chain of ownership.