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The ornamental design for a sit-up exercise anchor, substantially as shown and described. |
FIG. 1 is a perspective view of a sit-up exercise anchor showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a side elevational view thereof, the side opposite being a mirror image;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a rear elevational view thereof;
FIG. 7 is a perspective view of a modified form of the design shown in FIGS. 1 through 6;
FIG. 8 is a front elevational view thereof;
FIG. 9 is a top plan view thereof;
FIG. 10 is a side elevational view thereof, the side opposite being a mirror image;
FIG. 11 is a bottom plan view thereof;
FIG. 12 is a rear elevational view thereof;
FIG. 13 is a perspective view of a second modified form of the design shown in FIGS. 1 through 6;
FIG. 14 is a front elevational view thereof;
FIG. 15 is a top plan view thereof;
FIG. 16 is a side elevational view thereof, the side opposite being a mirror image;
FIG. 17 is a bottom plan view thereof;
FIG. 18 is a rear elevational view thereof.
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