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发明名称
HOLLOW METAL SHAFT
摘要
申请公布号
CA381810(A)
申请公布日期
1939.06.06
申请号
CAD381810
申请日期
申请人
WILEY W. MCMINN
发明人
WILEY W. MCMINN
分类号
主分类号
代理机构
代理人
主权项
地址
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