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经营范围
发明名称
Skill device
摘要
申请公布号
US2458668(A)
申请公布日期
1949.01.11
申请号
US19460639761
申请日期
1946.01.08
申请人
WOOD RUSSELL A
发明人
WOOD RUSSELL A.
分类号
A63B67/10
主分类号
A63B67/10
代理机构
代理人
主权项
地址
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