Socket for indicating lamp

FIG. 1 is a front, top, and right side perspective view of a socket for indicating lamp showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the figures illustrate portions of the socket for indicating lamp that form no part of the claimed design.