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Gumdo Patent Certificate of Design Registration # 30-0487183 Certificate of Design Registration # 30-0487184 Certificate of Design Registration # 30-0487185
Certificate of New Utility Registration # 0217638 Certificate of New Utility Registration # 0228557 Certificate of New Utility Registration # 0270417 Certificate of New Utility Registration # 0277579
Certificate of New Utility Registration # 0211654 Certificate of Design Registration # 0309671 Certificate of Design Registration # 0469957 Certificate of Patent # 0469957
   
Certificate of Patent
# 0469958
Certificate of Patent
# 0469960