The mark consists of letters ATO. The horizontal line at the top of the T extends to the lower left. The left side of the O is not closed. The middle point extends a line to the left to divide the T into upper and lower parts, and is combined with the T and the diagonal line on the left. Form an abstract A. The left end of the line is an arc, and there is a circle at the lower right of O.
Color is not claimed as a feature of the mark.