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.
Food processor
One of the first electric food processors was the Starmix, introduced by German company Electrostar in 1946. Although the basic unit resembled a simple blender, numerous accessories were available, including attachments for slicing bread, milk centrifuges and ice cream bowls. In a time when electric motors were expensive, they also developed the piccolo, where the food processor's base unit could drive a vacuum cleaner. In the 1960s, Albrecht von Goertz designed the Starmix MX3 food processor. Although the entire company was rebranded as Starmix in 1968 following the success of the processors, they later focused on vacuum cleaners and electric hand-dryers and the last mixer was produced around the year 2000. 
In France, the concept of a machine to process food began when a catering company salesman, Pierre Verdun, observed the large amount of time his clients spent in the kitchen chopping, shredding and mixing. He produced a simple but effective solution, a bowl with a revolving blade in the base. In 1960, this evolved into Robot-Coupe, a company established to manufacture commercial "food processors" for the catering industry. In the late 1960s, a commercial food processor driven by a powerful commercial induction motor was produced. Robot-Coupe's Magimix food processor arrived from France in the UK in 1974, beginning with the Model 1800. Then, a UK company Kenwood Limited started their own first Kenwood Food Processor, 'processor de- luxe,' in 1979.