Hey Doors, There is no historical documentation or accounts of who invented the cast iron stove or when. The POLO was a lesser brand name of stoves both heating and cooking. You wont see many. I have seen a few but the bottom is usually burned out and the legs will no longer stay in place. They seem to be prevalent in the north as the ones I have seen are brought down from there leading me to believe the ma be an older type of stove.
You see more Standards,Yales and Wiess models in the south.