The ornamental design for a writinginstrumentclip, as shown and described.
FIG. 1 is a top front perspective view of the writing instrument clip showing our new design;
FIG. 2 is a front elevation view of the design shown in FIG. 1;
FIG. 3 is a top plan view of the design shown in FIG. 1;
FIG. 4 is a bottom plan view of the design shown in FIG. 1;
FIG. 5 is a rear elevation view of the design shown in FIG. 1;
FIG. 6 is a left side elevation view of the design shown in FIG. 1; the right side elevation view being a mirror image thereof; and,
FIG. 7 is an exploded top front perspective view of the design shown in FIG. 1.
The broken lines showing the hole in the top, the pad on the back of the clip, and the writing instrument in FIGS. 1, 3, 4, 5, 6, and 7 are included for the purpose of showing portions of the writing instrument clip that form no part of the claimed design.