Zokul was a sales division of the National Lamp Works of the General Electric Company. It sold carbon filament lamps and, later, tungsten filament lamps, including turndown designs. It was called the Zokul Electric Lamp Division and was located at 4503 Hough Avenue, Cleveland. I don't know when it started in business with that name but it was in business in 1914; it was still in business in 1930. The label used on carbon lamps was about 5/8-inch in diameter with white letters and blue background.
