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发明名称
Drill chuck
摘要
申请公布号
US2139421(A)
申请公布日期
1938.12.06
申请号
US19370163992
申请日期
1937.09.15
申请人
RINEER ARTHUR E
发明人
RINEER ARTHUR E.
分类号
B23B31/12
主分类号
B23B31/12
代理机构
代理人
主权项
地址
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