Out of frustration, Josephine Cochrane invented the dishwasher. She'd been angry that hired domestic help continually broke and chipped her fine china. Cochrane's dishwasher used high water pressure aimed at a wire rack of dishes, she received a patent for it in 1886.During this era, most houses didn't have the technology of a hot water system to run such a machine, but Cochrane persisted and sold her idea to hotels and restaurants.
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