MAKE A MEME View Large Image Westinghouse incandescent light, carbon double arch filament, c. 1890 - DSC06545.JPG Light bulb exhibited in the Franklin Institute Philadelphia Pennsylvania USA I took this photograph 2011-10-20 11 03 15 Daderot Light bulbs in the Franklin ...
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Keywords: Westinghouse incandescent light, carbon double arch filament, c. 1890 - DSC06545.JPG Light bulb exhibited in the Franklin Institute Philadelphia Pennsylvania USA I took this photograph 2011-10-20 11 03 15 Daderot Light bulbs in the Franklin Institute Light bulb filaments
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