Sep 20 1984 The Cosby Show premiers. Sep 20 1964 The Addams Family premiers. (Capital Idea!) Sep 20 1884 Equal Rights Party founding convention is held in San Francisco, and nominates female candidates for President, Vice President. Sep 20 1860 The Prince of Wales, later to become King Edward VII, becomes the first British royalty to visit the United States. Sep 20 1859 Patent granted on the electric range. Sep 20 1797 US frigate 'Constitution' (Old Ironsides) launched in Boston. Sep 20 1519 Magellan starts first successful circumnavigation of the world.