7. Snowblower
Cleanliness should be not only at home but also in the streets, regular secretary decided Cynthia Westover and gathered great-grandfather of modern machines to clean the streets of snow in 1892.
8. Dishwasher
Josephine Cochran, 1839 was the inventor of the first commercially successful hand-powered dishwasher. This happened in 1886, but only 40 years later Cochrane device has been recognized as a necessary thing in the economy.
