Patent Assignment
Reel/Frame 016095/0302
Assignment of Assignor's Interest
Recorded: 2005-06-06
Pages: 4
Assignors
JEFFERS, LARRY A.
Executed: 2005-05-18
BERTHOLD, JOHN W.
Executed: 2005-05-06
LOPUSHANSKY, RICHARD L.
Executed: 2005-05-06
NEEDHAM, DAVID B.
Executed: 2005-05-18
Assignee
DAVIDSON INSTRUMENTS INC.
4800 RESEARCH FOREST DRIVE, THE WOODLANDS, TEXAS, 77381
Covered Property
(1)
Interferometric Signal Conditioner for Measurement of Absolute Static Displacements and Dynamic Displacements of a Fabry-Perot Interferometer
Related Assignments
(2)
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 →
Assignment of Assignor's Interest
Jun 25, 2019
From: HALLIBURTON ENERGY SERVICE, INC.
To: DAVIDSON INSTRUMENTS, INC.
Reel/Frame 049577/0382 →