IP Library › Assignment 019509/0269
Patent Assignment
Reel/Frame 019509/0269

Assignment of Assignor's Interest

Recorded: 2007-07-02 Pages: 5
Assignors
BERTHOLD, JOHN W.
Executed: 2007-06-20
NEEDHAM, DAVID B.
Executed: 2007-06-20
Assignee
DAVIDSON INSTRUMENTS INC.
8301 NEW TRAILS DRIVE, THE WOODLANDS, TEXAS, 77381
Covered Property (1)
Fiber Optic Seismic Sensor Based on Mems Cantilever
Patent: 7,684,051 →
Application: 11/787,965 →
Publication: US 2008/0174781
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Nov 12, 2007
From: DAVIDSON INSTRUMENTS INC.
To: DAVIDSON ENERGY INC.
Reel/Frame 020095/0589 →
Assignment of Assignor's Interest Jan 26, 2009
From: DAVIDSON ENERGY, INC.; DAVIDSON INSTRUMENTS, INC.
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 022157/0305 →