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The ornamental design for a wind turbine, as shown and described.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 22 2011 | Vortex Wind Turbines AG | (assignment on the face of the patent) | / | |||
| Apr 22 2011 | DRACH, PETER | Vortex Wind Turbines AG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 026534 | /0037 | |
| Apr 22 2011 | VENTON, MARK | Vortex Wind Turbines AG | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 026534 | /0037 | |
| Jul 24 2020 | Vortex Wind Turbines AG | GASTMAN LTD | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 053541 | /0124 |
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