IP Library › Assignment 036899/0339
Patent Assignment
Reel/Frame 036899/0339

Assignment of Assignor's Interest

Recorded: 2015-10-28 Pages: 3
Assignor
RUSSELL OIL EXPLORATION LTD.
Executed: 2015-04-28
Assignee
WEATHERFORD TECHNOLOGY HOLDINGS, LLC
2000 ST. JAMES PLACE, HOUSTON, TEXAS, 77056
Covered Properties (2)
Directional Drilling Control
Patent: 7,543,658 →
Application: 11/672,995 →
Publication: US 2007/0181343
Directional Drilling Control
Patent: 7,510,031 →
Application: 11/772,324 →
Publication: US 2008/0121432
Related Assignments (2)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest Feb 9, 2007
From: RUSSELL, MICHAEL KING; WALKER, COLIN
To: RUSSELL OIL EXPLORATION LIMITED
Reel/Frame 018872/0723 →
Assignment of Assignor's Interest Aug 8, 2007
From: RUSSELL, MICHAEL KING; WALKER, COLIN
To: RUSSELL OIL EXPLORATION LIMITED
Reel/Frame 019664/0093 →