What type of Vacuum cleaners were invented in 1868 by Ives McGaffey?

Answer Try the following web sites for your answers McGaffeypatents the vacuum cleaner, a "sweeping machine" in 1869. Starts American Carpet Cleaning Co. located in Boston mass Ives W. McGaffey, Chicago... Read More »

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Who invented vacuum cleaners?

What is the weighted means price of a retailer selling 50 vacuum cleaners at 90 and 35 vacuum cleaners at 140?

Answer "Eutectic" refers to a mixture or alloy that has the lowest possible melting / freezing point. In a true eutectic solution, all its consituents move from solid state to liquid and vice versa... Read More »

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