Patent Assignment
Reel/Frame 019992/0711
Assignment of Assignor's Interest
Recorded: 2007-10-22
Pages: 3
Assignor
NEEDHAM, DAVID B
Executed: 2007-10-04
Assignee
DAVIDSON INSTRUMENTS INC.
8301 NEW TRAILS DRIVE, THE WOODLANDS, TEXAS, 77381
Covered Property
(1)
Methods and Apparatus for Measuring Multiple Fabry-Perot Gaps
Related Assignments
(3)
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 →
Assignment of Assignor's Interest
Jun 25, 2019
From: HALLIBURTON ENERGY SERVICE, INC.
To: DAVIDSON INSTRUMENTS, INC.
Reel/Frame 049577/0382 →