IP Library Assignment 016270/0902
Patent Assignment
Reel/Frame 016270/0902

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)
Differential Pressure Transducer with Fabry-Perot Fiber Optic Displacement Sensor
Patent: 7,134,346 →
Application: 11/105,670 →
Publication: US 2005/0241399
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jan 26, 2009
From: DAVIDSON ENERGY, INC.; DAVIDSON INSTRUMENTS, INC.
To: HALLIBURTON ENERGY SERVICES, INC.
Reel/Frame 022157/0305 →