The ornamental design for a chain for a slidefastener, as shown and described.
The file of this patent contains at least one photograph executed in color. Copies of this patent with color photographs will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front view of a chain for a slider fastener showing my(our) new design; and,
FIG. 2 is a rear view thereof.
The portions of the article colored in gray are shown for illustrative purposes only and form no part of the claimed design.