Set of Operating Panel Buttons

FIG. 1 is an enlarged view of a single button of a set of operating panel buttons showing my new design;

FIG. 2 is an enlarged view of a second button thereof;

FIG. 3 is an enlarged view of a third button thereof;

FIG. 4 is an enlarged view of a fourth button thereof;

FIG. 5 is an enlarged view of a fifth button thereof;

FIG. 6 is an enlarged view of a sixth button thereof;

FIG. 7 is an enlarged view of a seventh button thereof;

FIG. 8 is an enlarged view of an eighth button thereof;

FIG. 9 is an enlarged view of a ninth button thereof;

FIG. 10 is an enlarged view of a tenth button thereof;

FIG. 11 is an enlarged view of an eleventh button thereof;

FIG. 12 is an enlarged view of a twelfth button thereof;

FIG. 13 is a front view of the set of operating panel buttons;

FIG. 14 is a second front view of the set of operating panel buttons;

FIG. 15 is a front view of a single button of the set shown in a state of use;

FIG. 16 is a front view of a single button of the set shown in a state of use;

FIG. 17 is a front view of a single button of the set shown in a state of use;

FIG. 18 is a front view of a single button of the set shown in a state of use;

FIG. 19 is a front view of a single button of the set shown in a state of use;

FIG. 20 is a front view of a single button of the set shown in a state of use; and,

FIG. 21 is a front view of single button of the set shown in use.

Broken lines are used to illustrate features of the set of operating panel buttons, that form no part of the claimed design. Dot-dot-dashed broken lines are used to illustrate a boundary of a claimed portion. The operating panel shown and described herein may comprise a graphical user interface or physical display panel.