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The ornamental design for a power amplifier, substantially as shown and described.
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FIG. 1 is a perspective in view of the invention;
FIG. 2 is a front view of thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a one side view thereof;
FIG. 5 is an opposite side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Aug 22 2005 | Bose Corporation | (assignment on the face of the patent) | / | |||
| Sep 29 2005 | WARDEN, ROBERT A | Bose Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 016848 | /0470 |
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