Carhartt sign 1940s 1970s Posted on December 9, 2022 by admin Carhartt sign 1940s 1970s Sign - Symbol - Watermark - Trademark - Company logo. The below image is of the Carhartt sign 1940s 1970s showing the sign by itself or the logo including the brand name of the relevant company. Carhartt sign 1940s 1970s