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发明名称
Chuck structure
摘要
申请公布号
US2224639(A)
申请公布日期
1940.12.10
申请号
US19390260522
申请日期
1939.03.08
申请人
TOMKINS-JOHNSON COMPANY
发明人
WARD LOYD A.
分类号
B23B31/175
主分类号
B23B31/175
代理机构
代理人
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地址
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