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The ornamental design for an acoustic modem, substantially as shown. |
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FIG. 1 is a front, top and right side perspective view of an acoustic modem showing my new design;
FIG. 2 is a top plan view;
FIG. 3 is a front elevational view;
FIG. 4 is a bottom plan view;
FIG. 5 is a left side elevational view; and
FIG. 6 is a right side elevational view.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 17 1980 | Novation, Inc. | (assignment on the face of the patent) | / |
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