The Brush – Swan Electric light (& back up battery for bulb)
By Michael Gibbons; posted March 28, 2024
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The Brush – Swan Electric light (& back up battery for bulb) Scientific American, December 30, 1882, page 423. |
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The Brush – Swan Electric light (& back up battery for bulb) Scientific American, December 30, 1882, page 423. |