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On March 25th, 2016, Grobman obtained product design patent of Ninja Skate. Patent No.: ZL201530074364.X
Release Date:2013-12-20
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On March 25th, 2016, Grobman obtained product design patent of Ninja Pro. Patent No.: ZL201530074365.4
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On March 25th, 2016, Grobman obtained product design patent of Ninja Knife. Patent No.: ZL201530074367.3
