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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.
Polaris then recalled the sleds and quickly developed a new prototype to avoid bankruptcy. [8] The new model, the 1965 Mustang, became a hit as a family snowmobile and boosted Polaris sales. Polaris continued to develop snowmobiles similar to this model throughout the 1960s-1970s, and went on to become one of the leaders in the snowmobile industry.
A swimming pool reactor, [1] also called an open pool reactor, is a type of nuclear reactor that has a core (consisting of the fuel elements and the control rods) immersed in an open pool usually of water. [2] The water acts as neutron moderator, cooling agent and radiation shield. The layer of water directly above the reactor core shields the ...
Single-zone models are typically a fiberglass pressure-driven exercise pool that has swim jets at one end, and one or more spa seats fitted with massage jets at the other. [6] Swimmers and athletes have praised the integration of both a hot tub and swimming machine model since they can use it for exercising and recreational purposes.
When it comes to domestic routes, the top three globally were all in Asia: Jeju International-Seoul Gimpo, Sapporo New Chitose-Tokyo Haneda, and Fukuoka-Tokyo Haneda.
280 births (2 P) E. 280 establishments (1 P) This page was last edited on 6 November 2019, at 06:44 (UTC). Text is available under the Creative Commons Attribution ...