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发明名称
Rating board
摘要
申请公布号
US1860856(A)
申请公布日期
1932.05.31
申请号
US19300446833
申请日期
1930.04.24
申请人
HARRY HENKE
发明人
HENKE HARRY
分类号
A63B71/06
主分类号
A63B71/06
代理机构
代理人
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