In 1943 Throughout World War II
Spencer and Raytheon immediately saw the potential on this revolutionary course of, which they patented and put in in a kitchen equipment they dubbed the RadaRange. In 1947, Raytheon put the RadaRange in the marketplace. The bulky equipment weighed 750 pounds (340 kilograms), was 5-1/2 toes tall (1.7 meters) and cost about $5,000 – or …