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经营范围
发明名称
Rolling crutch
摘要
申请公布号
US2278901(A)
申请公布日期
1942.04.07
申请号
US19410392163
申请日期
1941.05.06
申请人
SMOCK OLIN C
发明人
SMOCK OLIN C.
分类号
A61H3/04
主分类号
A61H3/04
代理机构
代理人
主权项
地址
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