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2 Small Electromagnetic Motors, c. 1900...
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Large Induction Coil with Mercury Interrupter...
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Induction Coil for Physical Experiments, c. 1...
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Induction Coil...
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Spark Gap Induction Coil...
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Ruhmkorff-Pattern Spark Coil, c. 1920...
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2 Induction Coils, c. 1905...
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Novi Power Generator with Spotlight, c. 1920...
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Electromagnetic Motor with Geissler Tube, c. ...
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2 Dynamo-Electrical Machines...
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Current Generating Dynamo, c. 1910...
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Page's Electro Motor, c. 1920...
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2 Precision Galvanometers, c. 1900...
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Electric Motor with Rotating Geissler Tube, c...
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Large Electromagnetic Motor with Rotating Gei...
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2 Early Electric Motors, c. 1910...
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Electromagnetic Motor with Geissler Tube, c. ...
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Large Electric Motor on Heavy Iron Base, c. 1...
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Cased Experimental Motor Set, c. 1910...
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3 Small Electromagnetic Motors, c. 1910...
