The color(s) black, grey, white, and yellow is/are claimed as a feature of the mark.
The mark consists of the wording "CRANE U" in stylized characters, an irregular octagon, and a hook design. The letter "U" is black with yellow accents along its left interior edges, and has five concentric borders that are yellow, white, yellow, black, and yellow, respectively. The octagon is shaded black, centrally overlays the "U", and has three concentric borders that are yellow, white, and black, respectively. The word "CRANE" in yellow is centered within the octagon. The hook design is black with yellow accents and border, and located is between the vertical legs of the "U", beneath and just slightly overlapping the bottom edge of the octagon. Grey shadowing appears intermittently along the borders of the "U", the hook design, and the octagon.
As to "CRANE U"