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The ornamental design for a speakerphone, as shown and described.
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The broken lines in the drawing figures are used to show environmental structure only, and form no part of the claimed design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 18 2009 | WADA, ISAO | Yamaha Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 022567 | /0073 | |
| Apr 20 2009 | Yamaha Corporation | (assignment on the face of the patent) | / |
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