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.
Grabit (cookware)
Grab-Its are microwave-safe cookware easily identifiable by their tab handle. They were introduced by Corning Glass Works in 1977, under the Corning Ware brand and are now sold in a slightly different form by Corelle Brands. Grab-Its are notable as being among the first cookware specifically designed for microwave use - their design was recognized by the Smithsonian's Cooper-Hewitt, National Design Museum. Grab-Its strongly resemble porringers.