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Scientific American, Vol. 69, No. 2 (July 1893) (1893)

leaf 14

An illustration from Scientific American, Vol. 69, No. 2 (July 1893), 1893, leaf 14
Sftitntxtit %mtxum. July 8, 1893.J 31 … make. B y G. M. Hopkins.—Description of a small electro THE BEST IN THE WORLD. motor devised and constructed with a view to assisting THE MANUFACTURE OF Pumps Any Kind of Liquid. amateurs to make a motor wnich might be driven with Engraving and Jewelry Work. advantage by a current derived from a…

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