综童话白雪王子txt:who invented a lamp to keep miners safe underground?

who invented a lamp to keep miners safe underground who invented a lamp to keep miners safe underground? who invented the aeroplane Who invented(发明) the sandwich?? Who invented the first computer? Who invented the first bike? who invented the 1st telephone and when? _____ his fifth year, he invented a new machine. Who invented the first robot,Clinton,Dr Sun Yatsen or Engelberg? who invented the earliest instrument to tell people where earthquakes happened?