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labor-saving invention

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  • Crane (machine) — A modern crawler type derrick crane with outriggers. The latticed boom is fitted with a jib. A crane is a type of machine, generally equipped with a hoist, wire ropes or chains, and sheaves, that can be used both to lift and lower material …   Wikipedia

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  • American modernism — like modernism in general is a trend of thought that affirms the power of human beings to create, improve, and reshape their environment, with the aid of scientific knowledge, technology and practical experimentation, and is thus in its essence… …   Wikipedia

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  • Alberto Santos-Dumont — Infobox Person name = Alberto Santos Dumont image size = 150px caption = birth date = July 20, 1873 birth place = Palmira, Minas Gerais death date = July 23, 1932 death place = Guarujá, São Paulo occupation = Alberto Santos Dumont (July 20, 1873… …   Wikipedia

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