Patent Assignment
Reel/Frame 018703/0760
Assignment of Assignor's Interest
Recorded: 2007-01-03
Pages: 2
Assignor
DAHLGREN, SCOTT, MR.
Executed: 2007-01-03
Assignee
HALL, DAVID R., MR.
2185 SOUTH LARSEN PARKWAY, PROVO, UTAH, 84606
Covered Property
(1)
Apparatus and Method for Vibrating a Drill Bit
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.