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It took up to 6 years for Thomas A. Edison to make the lightbulb

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12y ago
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5mo ago

It took Thomas Edison years of experimentation and trial and error to create a practical and commercially viable incandescent light bulb. He started working on it in the late 1870s and finally developed a long-lasting bulb in 1879.

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Q: How long did it take Thomas Edison to create the light bulb?
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