 The invention was produced in August 1875, patented in 1877, and the details were published in the book "The Phonic Wheel" in 1878 in a Danish and a French edition.At that time the invention was adopted by the American company The Delany Synchronous multiple Telegraph, and a new fight of priority arose.In 1886 the Franklin Institute awarded la Cour the John Scott Legacy Medal for the phonic wheel and at the same time presented Delany with the Elliott Cresson Medal for the synchronism, a decision la Cour protested against.