The mark consists of a black rectangle with a white rectangle in the right of the black rectangle and the word "CLAMSHELL" in the color black in the white rectangle and extending rightward out of the black rectangle.
019, 021, 023, 031, 035, 044
Design plus words, letters, and/or numbers
Color is not claimed as a feature of the mark.
Plain single line rectangles, Rectangles that are completely or partially shaded