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9647 240x400 optical fiber, filament, glow
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6877 240x400 light bulb, filament, light
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19277 240x400 light bulb, edisons lamp, filament
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7267 240x400 light bulb, edisons lamp, filament
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13150 240x400 light bulb, edisons lamp, filament
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9892 240x400 bulb, spiral, filament
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12011 240x400 light bulb, electricity, light
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7940 240x400 light bulbs, light, electricity