The mark consists of the stylized letters 'DB' within the center of a rectangle, and four circular design elements located in each corner within the rectangle.
100, 101, 102
Design plus words, letters, and/or numbers
Color is not claimed as a feature of the mark.
Circles, exactly three circles , Circles within a circle, Rectangles that are completely or partially shaded, Geometric figures forming letters, numerals or punctuation , Objects forming letters or numerals