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Heinrich Ruehl
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8838. R³hl, H. April 16. Electric toys; toy engines, driving-mechanism for. -An electro-magnetic toy is constructed so that the attraction and repulsion of the iron coref of a solenoid b resembles the motion of a piston in the cylinder of a steam-engine. The motor is run on a high-tension circuit, an ordinary lamp q being used as a rheostat.
GB190708838D1907-04-161907-04-16Improvements in Electro Mechanical Toys
ExpiredGB190708838A
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