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Early Door Alarm System with Glass Battery, c...
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Electromagnetic Motor, c. 1880...
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High-Tension Transformer, c. 1910...
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2 Interesting Electric Motors, c. 1910...
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Magneto-Electric Shock Generator, c. 1880...
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Spark Gap Induction Coil...
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3 Special Bulbs in Triple Mount, c. 1920...
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Froment's Electric Motor...
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2 Small Electric Motors...
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Very Rare Nernst Lamp...
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29 Early Carbon Filament Bulbs, 1900 onwards...
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Electric Motor with Chromic Acid Cell by Erns...
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Electric Motor and 2 Armature Models, c. 1910...
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Electromagnetic Rotating Motor, c. 1860...
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2 Current Generating Dynamos, c. 1915...
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Small Experimental Motor, c. 1910...
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2 Electromagnets according to Weinhold, c. 19...
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Small Electromagnetic Motor, c. 1900...
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Large Dynamo-Electric Demonstration Machine, ...
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Early Electric Motor According to Moritz von ...
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2 Dynamo-Electric Machines, c. 1910...
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Electric Motor with Rotating Geissler Tube, c...
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2 Early Electric Motors, c. 1910...
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Large Early Electric Motor, c. 1890...
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Early Electric Motor, c. 1900...
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Electromagnetic Motor with Geissler Tube, c. ...
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Electric Experimental Motor with Rotating Mir...
