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The ornamental design for dental floss holder, as shown and described. |
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FIG. 1 is a front elevation of a dental floss holder showing my new design;
FIG. 2 is a side elevation thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a cross-section taken on line 4--4 of FIG. 1;
FIG. 5 is a bottom plan view; and
FIG. 6 is a cross-section taken on line 6--6 of FIG. 1.
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