The Model Engineering Co Ltd. of London sold under the trade name KY-KO a ventilating fan and a small motor. Both sold in the UK for 7 pounds 7 shillings and 6 pence in the 1930's.

These fans were sold in large numbers in what was then British India.

A modern version of the KY-KO was built and sold, under the trade name NATIONAL FAN in Pakistan until about 1996.