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发明名称
SPRING GROUP
摘要
申请公布号
CA464138(A)
申请公布日期
1950.04.04
申请号
CAD464138
申请日期
申请人
AMERICAN STEEL FOUNDRIES
发明人
CARL E. TACK
分类号
主分类号
代理机构
代理人
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地址
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