Patent Assignment
Reel/Frame 045305/0394
Assignment of Assignor's Interest
Recorded: 2018-03-21
Pages: 4
Assignee
DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
22, DOOSANVOLVO-RO, SEONGSAN-GU, CHANGWON-SI, GYEONGSANGNAM-DO, 51711, KOREA, REPUBLIC OF
Covered Property
(1)
Impedance Tube Having a Machined Union
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Release of Security Interest
Oct 1, 2021
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: WEATHERFORD TECHNOLOGY HOLDINGS, LLC; WEATHERFORD NETHERLANDS B.V.; WEATHERFORD NORGE AS; HIGH PRESSURE INTEGRITY, INC.
Reel/Frame 057683/0423 →
Security Interest
Oct 1, 2021
From: WEATHERFORD TECHNOLOGY HOLDINGS, LLC; WEATHERFORD NETHERLANDS B.V.; WEATHERFORD NORGE AS; HIGH PRESSURE INTEGRITY, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 057683/0706 →