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The ornamental design for a tone generator for an audio system, as shown. |
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FIG. 1 is a top, front, and right-side perspective view of a tone generator for an audio system showing my new design;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a right-side elevational view thereof;
FIG. 5 is a left-side elevational view thereof;
FIG. 6 is a top plan view thereof; and
FIG. 7 is a bottom plan view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 08 1989 | TANAKA, SHINKICHI | Sony Corporation, | ASSIGNMENT OF ASSIGNORS INTEREST | 005054 | /0044 | |
| Mar 13 1989 | Sony Corporation | (assignment on the face of the patent) | / |
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