Operation button for elevator

FIG. 1 is a perspective view of the front, right, and top side of an operation button for elevator showing of 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;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a perspective view thereof, shown in an exemplary environment of use.

The evenly spaced broken lines are shown for the purpose of illustrating environmental subject matter as well as parts of the article, none of which form part of the claimed design. The dot-dash broken lines represent the boundaries of the claimed design and form no part thereof.