1879The lightbulb was improved by many, not just Edison.

Wacky WorldInventions

Joseph Swan and others built working bulbs; Edison’s team made a long-lasting practical version in 1879.

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<span class="aj-year">600</span>Chess originated in India.<span class="aj-year">1793</span>The cotton gin changed cotton processing forever.<span class="aj-year">1873</span>Jeans were patented in 1873.