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发明名称
Expanding chuck
摘要
申请公布号
US2349447(A)
申请公布日期
1944.05.23
申请号
US19430513655
申请日期
1943.12.08
申请人
MARTIN ANDREW S
发明人
MARTIN ANDREW S.
分类号
B23B31/40
主分类号
B23B31/40
代理机构
代理人
主权项
地址
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