Warning Sign

5. Warning sign

5 . 1 : Front

5 . 2 : Back

5 . 3 : Top

5 . 4 : Right

The left view is omitted because it is identical with the right view; the bottom view is omitted because it is identical with the top view; the dot-dash broken lines define the boundaries of the claimed design and form no part of the claimed design; the broken lines inside the boundaries form part of the claimed design; any other broken lines illustrate portions of the warning sign and form no part of the claimed design.