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The first swimming pool cleaner was invented in 1912 by Pittsburgh, Pennsylvania citizen John M. Davison. On November 26, 1912, he submitted a patent application to the United States Patent and Trademark Office entitled "Cleaning Apparatus For Swimming Pools And The Like", which was issued on March 25, 1913.
Automated pool cleaner. Automated pool cleaners more commonly known as "Automatic pool cleaners" and in particular electric, robotic pool cleaners provide an extra measure of filtration, and in fact like the handheld vacuums can microfilter a pool, which a sand filter without flocculation or coagulants is unable to accomplish. [21]
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Dirt Devil is a brand name originally introduced (or debuted) in 1981 by the Royal Appliance Manufacturing Co, an American vacuum cleaner and floor care company. The company and the brand are now owned by TTI Floor Care North America, a subsidiary of Hong Kong–based Techtronic Industries, who also own Oreck, Vax, and Hoover North America.
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