Six Sizes of Trampolines Manufactured by Nissen Trampoline Co' Photographic Print | Art.com
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Mr. George Nissen (l'inventeur du trampoline) // Central Park, 1950
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George Nissen dies at 96; inventor of the modern trampoline - Los Angeles Times
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Nissen Leisure Ltd on Twitter: "We love it when customers order our equipment in different colours, here's one of our 77a trampolines with forest green pads that we made recently. #ukmanufacturing #manufacturingUK #
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/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/d1/15/d115f11f-64f3-454d-b60b-35ea891a2226/george_nissen_on_trampoline-main.jpg "How the Trampoline Came to Be | Innovation| Smithsonian Magazine")
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File:Dian Nissen jumping at a trampoline park.jpg - Wikimedia Commons
Trampoline Inventor Saw Sport Enshrined in Olympics - WSJ
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George Nissen: Inventor of the trampoline | The Independent | The Independent
