You sent me down a rabbit hole. I have no idea, but: I searched axial flow motor in wikipedia, and the last link is: https://newatlas.com/technology/conifer-

You sent me down a rabbit hole. I have no idea, but: I searched axial flow motor in wikipedia, and the last link is: https://newatlas.com/technology/conifer-iron-magnet-electric-motors/ https://newatlas.com/technology/conifer-iron-magnet-electric... So maybe?