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United States of America Patent
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Apr 11, 2017
Grant Date -
Dec 25, 2014
app pub date -
May 7, 2013
filing date -
May 8, 2012
priority date (Note) -
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Abstract
The present invention relates to a top generating a clear collision sound when the top collides with another top so as to make playing with a top more exciting, and having an improved fastening structure for a metal wheel on the top so as to allow the metal wheel to sufficiently vibrate when the top collides.
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