The Trampoline
The Trampoline. Invented By: George Nissen. Brian Kristin December 7, 2011 Period# 2 Computer# 17. Music: Free Play Music, The Chili Stain, December 8, 2011, www.freeplaymusic.com. Lemelson MIT, trampoline , December 1, 2011, http://web.mit.edu/invent/iow/nissen.html.
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