IP Library › Assignment 019178/0919
Patent Assignment
Reel/Frame 019178/0919

Assignment of Assignor's Interest

Recorded: 2007-04-18 Pages: 3
Assignors
WILDE, TYSON J., MR.
Executed: 2007-04-17
HEDENGREN, CARLA, MS.
Executed: 2007-04-17
Assignee
HALL, DAVID R., MR.
2185 SOUTH LARSEN PARKWAY, PROVO, UTAH, 84606
Covered Property (1)
Rotary Valve for Steering a Drill String
Patent: 7,503,405 →
Application: 11/737,034 →
Publication: US 2007/0221409
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Oct 20, 2008
From: HALL, DAVID R.
To: NOVADRILL, INC.
Reel/Frame 021701/0758 →
Assignment of Assignor's Interest Mar 10, 2010
From: NOVADRILL, INC.
To: SCHLUMBERGER TECHNOLOGY CORPORATION
Reel/Frame 024055/0457 →