Microwave oven
In 1947, Raytheon built the "Radarange", the first commercially available microwave oven. It was almost tall, weighed and cost about US$5,000 ($ in dollars) each. It consumed 3 kilowatts, about three times as much as today's microwave ovens, and was water-cooled. The name was the winning entry in an employee contest. An early Radarange was installed (and remains) in the galley of the nuclear-powered passenger/cargo ship NS "Savannah". An early commercial model introduced in 1954 consumed 1.6 kilowatts and sold for US$2,000 to US$3,000 ($ to $ in dollars). Raytheon licensed its technology to the Tappan Stove company of Mansfield, Ohio in 1952. They tried to market a large 220 volt wall unit as a home microwave oven in 1955 for a price of US$1,295 ($ in dollars), but it did not sell well.
Jenn-Air
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. Unfortunately Jenn Air quality control has suffered over time. Their glass cook tops consistently degrade (under the surface), oftentimes with only a few months of normal usage. No amount of cleaning or buffing will remedy the problem. As a result, customer demand has plummeted.