inventions By sydneykwok Period: Jan 1, 1000 to Jan 13, 2011 Iventions Jan 13, 1022 Romance novel Jan 13, 1025 music notes Jan 13, 1225 rounds Jan 13, 1597 Opera Jan 13, 1657 science fiction novel Jan 6, 1662 Pencils Jan 13, 1696 metronome Jan 13, 1698 piano Apr 15, 1770 Eraser Jan 13, 1800 Shampoo Jan 13, 1816 science fiction novel Jan 6, 1826 hamburgers Jan 6, 1828 Sharpeners Jan 13, 1829 accordion Jan 13, 1835 Tuba Jan 13, 1841 Saxophone Jan 6, 1870 Telephone Jan 13, 1870 Gum Jan 13, 1932 electric guitar Jan 13, 1932 Frying pan Jan 13, 1950 novel Oct 23, 2001 Ipod Jan 9, 2007 Iphone