The mark consists of "S STERN S STERN EQUIPMENT GUARD ATOMIC DIESEL" in stylized font. In the top left corner is the word "STERN" in dark blue and a stylized dark blue "S." I the top right corner there is gray outlined white stylized shield design with two portions of the outline missing on the left and right side. Inside the shield is "S STERN" in dark blue, "EQUIPMENT GUARD" in white on an orange banner, and an orange droplet set above a portion of a gear appearing in dark blue. Centered at the bottom of the mark is "ATOMIC" appearing in light blue, except for the letter "O", which is stylized to resemble an atomic helix model appearing in dark blue in place of the "O" with a light blue dot in the center of the atomic helix model. Stacked below the word "ATOMIC" is the stylized word "DIESEL" appearing in dark blue.
The color(s) dark blue, light blue, gray, orange, and white is/are claimed as a feature of the mark.
"EQUIPMENT GUARD" and "ATOMIC DIESEL"