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George Nisson, inventor of the trampoline, lives in San Diego's UTC | San Diego Reader
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George Nissen: Inventor of the trampoline | The Independent | The Independent
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Jumpoline Family Fun on Twitter: "George Nissen was an American gymnast and inventor who developed the modern trampoline. #jumpoline #familyfun #colorado #aurora #trampoline https://t.co/uCVzwsnJal" / Twitter
Who Invented the first Trampoline - George Nissen - YouTube