Oven gas stove included the AGA cooker invented in 1922 by Gustaf Dalén. The first electric ovens were invented in the very late 19th century, however, like many electrical inventions destined for commercial use, mass ownership of electrical ovens could not be a reality until better and more efficient use of electricity was available. More recently, ovens have become slightly more high-tech in terms of cooking strategy. The microwave as a cooking tool was discovered by Percy Spencer in 1946, and with the help from engineers, the microwave oven was patented. The microwave oven uses microwave radiation to excite the molecules
Percy A. Eisen Artists Theater in El Centro, California, the First National Bank of Fullerton in Fullerton, California, the Public Library in Torrance, California, and the El Mirador Hotel in Palm Springs, California. They also built the Valley National Bank Building, the oldest skyscraper in Tucson, Arizona, in 1929. He died on November 18, 1946 in Los Angeles County, California. Percy A. Eisen Percy A. Eisen (1885-1946) was an American architect. Percy Augustus Eisen was born on December 17, 1885 in Los Angeles, California. His father, Theodore Eisen, was a renowned architect. His mother was Annie (Bennett) Eisen. He designed the First Presbyterian