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The ornamental design for an audio amplifier, as shown and described. |
FIG. 1 is a top, front and right side perspective view of an audio amplifier showing my new design;
FIG. 2 is a top, front and right perspective view thereof, shown with the cassette cover in the closed position;
FIG. 3 is a top plan view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a rear elevational view thereof; and
FIG. 8 is a bottom plan view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
May 30 1989 | YAMAKAWA, YOSHIRO | YAMAHA CORPORATION, A CORP OF JAPAN | ASSIGNMENT OF ASSIGNORS INTEREST | 005130 | /0752 | |
Jun 01 1989 | Yamaha Corporation | (assignment on the face of the patent) | / |
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