IP Library Assignment 016270/0905
Patent Assignment
Reel/Frame 016270/0905

Assignment of Assignor's Interest

Recorded: 2005-07-15 Pages: 3
Assignors
BERTHOLD, JOHN W.
Executed: 2005-07-07
LOPUSHANSKY, RICHARD L.
Executed: 2005-07-07
Assignee
DAVIDSON INSTRUMENTS INC.
4800 RESEARCH FOREST DRIVE, THE WOODLANDS, TEXAS, 77381
Covered Property (1)
Method and Apparatus for Continuous Readout of Fabry-Perot Fiber Optic Sensor
Patent: 7,492,463 →
Application: 11/105,651 →
Publication: US 2005/0231729
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 →