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The ornamental design for a paving stone, as shown. |
FIG. 1 is a side view of a concrete paving stone according to our design;
FIG. 2 is a front view of the stone of FIG. 1;
FIG. 3 is a top plan view of the stone of FIG. 1; and
FIG. 4 is a front perspective view of the stone of FIG. 1.
Stewart, Michael, Muller, Keith, Kochen, Stanley
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