IP Library › Assignment 021731/0311
Patent Assignment
Reel/Frame 021731/0311

Assignment of Assignor's Interest

Recorded: 2008-10-24 Pages: 3
Assignor
ZIEROLF, JOSEPH A.
Executed: 1999-11-29
Assignee
IN-DEPTH, INC.
103 ANGELLE CIRCLE, HOUMA, LOUISIANA, 70360
Covered Properties (2)
Method and Apparatus for Determining Position in a Pipe
Patent: 6,759,968 →
Application: 10/032,114 →
Publication: US 2002/0093431
Method and apparatus for determining position in a pipe
Application: 10/887,366 →
Publication: US 2004/0239521
Related Assignments (2)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest Oct 27, 2008
From: IN-DEPTH, INC.
To: MARATHON OIL COMPANY
Reel/Frame 021731/0923 →
Assignment of Assignor's Interest May 3, 2017
From: MARATHON OIL COMPANY
To: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
Reel/Frame 042222/0080 →