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The ornamental design for an audio system, as shown and described.
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Portions in broken lines are for illustrative purpose only and form no part of the claimed design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 03 2010 | NAITO, TAKAHIRO | Sony Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 024994 | /0586 | |
| Sep 07 2010 | Sony Corporation | (assignment on the face of the patent) | / |
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