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In 1878, Joseph Swan, who had been experimenting with carbon filaments, reported he had successfully created a light bulb. In 1879 he demonstrated a working lamp during a lecture in Newcastle.
Joseph Swan invented the light bulb because he wanted people to see in the dark cheap and efficiently. He invent ed the light bulb in 1860, and received a patent for it in 1879.

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Q: When did Joseph swan invent the lightbulb?
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