Patent Assignment
Reel/Frame 024528/0440
Assignment of Assignor's Interest
Recorded: 2010-06-14
Pages: 5
Assignee
PETROWELL LIMITED
KIRKTON AVENUE, PITMEDDEN ROAD INDUSTRIAL ESTATE DYCE ABERDEENSHIRE, ABERDEEN, AB21 OBF, UNITED KINGDOM
Covered Property
(1)
Valve Assembly
Application:
12/739,063 →
Publication:
US 2010/0301242
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Address
Feb 26, 2013
From: PETROWELL LIMITED
To: PETROWELL LIMITED
Reel/Frame 029878/0085 →
Assignment of Assignor's Interest
May 9, 2017
From: PETROWELL LIMITED
To: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
Reel/Frame 042425/0705 →
Assignment of Assignor's Interest
Aug 9, 2017
From: PETROWELL, LTD.
To: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
Reel/Frame 043506/0292 →