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The ornamental design for a dental floss holder, as shown and described. |
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FIG. 1 is a perspective view of a dental floss holder showing my new design.
FIG. 2 is a side elevational view thereof.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a top plan view thereof.
FIG. 5 is a rear elevational view thereof.
The bottom of the dental floss holder is flat and unornamented.
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