Evening Republican, Volume 23, Number 287, Rensselaer, Jasper County, 2 December 1920 — Earl Hanson and His Invention [ARTICLE+ILLUSTRATION]

Earl Hanson and His Invention

Earl C. Hanson, American inventor who served to the navy, department of engineering ddring the war, with the receiving apparatus of his new invention on the United States torpedo boat destroyer Semmes, while his apcmidincr thp throucli Ambrose chuunel« An fIpDfiFBOU out Bounds through ear pieces so the navigator can toll by UH louanesg eg* the sound in each ear when he is over the cable.