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经营范围
发明名称
Knee exerciser
摘要
申请公布号
US2058563(A)
申请公布日期
1936.10.27
申请号
US19340758212
申请日期
1934.12.19
申请人
CAMPBELL HARRY J
发明人
CAMPBELL HARRY J.
分类号
A61H1/02
主分类号
A61H1/02
代理机构
代理人
主权项
地址
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