Microwave oven
The development of the cavity magnetron in the UK made possible the production of electromagnetic waves of a small enough wavelength (microwaves). American engineer Percy Spencer is generally credited with inventing the modern microwave oven after World War II from radar technology developed during the war. Named the "Radarange", it was first sold in 1946. Raytheon later licensed its patents for a home-use microwave oven that was first introduced by Tappan in 1955, but these units were still too large and expensive for general home use. Sharp Corporation introduced the first microwave oven with a turntable between 1964 and 1966. The countertop microwave oven was first introduced in 1967 by the Amana Corporation. After Sharp introduced low-cost microwave ovens affordable for residential use in the late 1970s, their use spread into commercial and residential kitchens around the world. In addition to their use in cooking food, types of microwave ovens are used for heating in many industrial processes.
Easy-Bake Oven
Despite the retrofit program, the problems persisted. According to data from the CPSC, an additional 249 reported incidents included 77 burns, 16 of which were second- or third-degree in nature. On July 19th 2007, Hasbro re-issued its voluntary recall of the Easy-Bake after learning that part of a 5-year-old girl's finger had to be amputated because of a severe burn. The recall affected 985,000 ovens that had been sold between May 2006 and July 2007. Ovens sold prior to May 2006 were not part of the recall, leaving more than 25 million side-entry/light bulb models in circulation unaffected.
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