发明名称 Paddles for boats
摘要 A plastic paddle of unitary construction defining a hand grip with a wrist engageable portion at one end, and a blade portion at the opposite end, which blade has a tapered cross sectional shape with flanges defined along its marginal edges to achieve maximum strength from a minimum material, and the paddle material itself being formed of plastic to a uniform thickness for economy in manufacture.
申请公布号 US4233925(A) 申请公布日期 1980.11.18
申请号 US19790013561 申请日期 1979.02.21
申请人 PROCTOR, DOUGLAS B. I. 发明人 PROCTOR, DOUGLAS B. I.
分类号 B63H16/04;(IPC1-7):B63H16/04 主分类号 B63H16/04
代理机构 代理人
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