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发明名称
Sports racket
摘要
A sports racket is provided with a uniform elongated string bed, uniform main strings and cross strings segments, a uniform elongated sweet spot, a uniform head structure, robust yoke design, and handle.
申请公布号
US7806789(B2)
申请公布日期
2010.10.05
申请号
US20070799812
申请日期
2007.05.03
申请人
SLEDGE JOHN L
发明人
SLEDGE JOHN L
分类号
A63B49/02
主分类号
A63B49/02
代理机构
代理人
主权项
地址
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