The ornamental design for a portion of a trigger for a trigger pump dispenser, as shown and described.
Description:
FIG. 1 is a left side elevational view of a portion of a trigger for a trigger pump dispenser showing our new design. Environmental parts are shown in broken lines for illustrative purposes only and form no part of the claimed design;
FIG. 2 is a front elevational view; and,
FIG. 3 is a botton plan view.
The right side elevational view is a mirror image of the left side elevational view.
