发明名称 Paddle blade and shaft I-beam joint
摘要 A paddle including a shaft having a distal end, the distal end ending in a protrusion; and a paddle blade having a proximal end joined to the distal end of the shaft, the proximal end having an inner surface and at least one internal longitudinal slot disposed adjacent to the inner surface engaged with the protrusion.
申请公布号 US8057271(B2) 申请公布日期 2011.11.15
申请号 US20090429336 申请日期 2009.04.24
申请人 HEVESI JOHN;HORVATH STEVE 发明人 HEVESI JOHN;HORVATH STEVE
分类号 B63H16/04 主分类号 B63H16/04
代理机构 代理人
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