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On March 25th, 2016, Grobman obtained product design patent of Wallet Ninja. Patent No.: ZL201530074366.9
Release Date:2013-12-20
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On December 30th, 2014, Grobman obtained the copyright certificate of artwork for multi-tool-wallet ninja. Certificate No.: 2014-F-00160380
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On March 25th, 2016, Grobman obtained product design patent of Ninja Pro. Patent No.: ZL201530074365.4
