Wireline roller device
Latest National Oilwell Varco UK Limited Patents:
Claims
The ornamental design for a wireline roller device, as shown and described.
Type: Grant
Filed: May 10, 2013
Date of Patent: Jun 16, 2015
Assignee: National Oilwell Varco UK Limited (Manchester)
Inventors: Harry Richard Stanley O'Brien (Elrick), Carl Richard Wood (Alford)
Primary Examiner: Cynthia Ramirez
Application Number: 29/454,516