Dahlander pole changing motor
... that the Dahlander pole changing motor is a Swedish invention for achieving two speeds in an electric motor?
... that the <b id="mwAxs"><a href="./Dahlander_pole_changing_motor" id="mwAxw" rel="mw:WikiLink" title="Dahlander pole changing motor">Dahlander pole changing motor</a></b> is a Swedish invention for achieving two speeds in an electric motor?