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The Internal Structure Of A Washing Machine

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Aug 07, 2019nbsp0183321858 hamilton smith develops a more effective rotary washing machine and is awarded us patent 21,909. 1901 alva fisher of chicago is awarded us patent 966,677 for the first electric washing machine, sold under the brand name thor, which consists of an electric motor powering a more conventional drum machine. just like a modern machine, it ...

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