Abdominal muscle trainer

The ornamental design for an abdominal muscle trainer, as shown and described.

FIG. 1 is a top perspective view of an abdominal muscle trainer showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is an end elevational view thereof.

Patent	Priority	Assignee	Title
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ER6047,

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