The story
The original Jenn-Air Products Company was founded by Louis J. Jenn in Indianapolis, Indiana, in 1947, later becoming simply Jenn-Air. In the early years, the company was focused on manufacturing and marketing of industrial fans for use in a variety of commercial and industrial applications. In 1961, Jenn-Air's integration of one of these fans to a cook-top range led to the invention of the first self-ventilated downdraft range. The company expanded its product line to include many other kitchen appliances including microwave ovens, refrigerators, dishwashers, and small appliances such as mixers and blenders.
From Wikipedia’s article on JennAir, shared under CC BY-SA 4.0.4