The mark consists of three crescent shapes surrounding a stylized fan beside the letters "D&B" all in dark blue on the left that fades to light blue. Underneath is the word "ENGINEERING" in light blue.
100, 101, 102
Design plus words, letters, and/or numbers
The color(s) dark blue and light blue is/are claimed as a feature of the mark.
Air cleaner filters, household (furnace, a/c, etc.) , Bands, curved