Did you know that the invention of the dishwasher is credited to an American woman named Josephine Cochrane? She patented the first dishwasher in 1886, making dish-washing much easier for households. Another interesting fact is that the microwave oven was invented by mistake! In 1945, engineer Percy Spencer was working on radar equipment when he noticed that a candy bar in his pocket had melted. This led to the invention of the microwave oven. The refrigerator, a staple in every kitchen, was invented by Scottish scientist William Cullen in 1755. However, it wasn't until 1913 that refrigerators for home use were introduced by Fred W. Wolf Jr. and Albert T. Marshall. Coffee lovers will appreciate that the first electric coffee maker was patented in 1901 by German housewife Melitta Bentz. Her invention revolutionized the way coffee is brewed in homes around the world. And finally, the humble vacuum cleaner was invented by British engineer Hubert Cecil Booth in 1901. Contrary to popular belief, the vacuum cleaner was not originally designed to clean floors, but rather to remove dust from chairs in large buildings. So, next time you use your household appliances, remember the inventors who made your life easier!