In the early 1920s Square D sold the majority of their fuse business in order to focus more on their safety switches and other safety products. The company began an aggressive marketing campaign to promote their safety switches. Their advertisements, which became known as ""Jones is Dead!"", directed public attention to the safety hazards of exposed electrical switches in factories. Square D hoped to capitalize on the growing concern of factory safety. One such fully working Square D safety switch from 1922 was donated in November 2003 to the Smithsonian's National Museum of American History.