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发明名称
Power-operated chuck
摘要
申请公布号
US1775592(A)
申请公布日期
1930.09.09
申请号
US19270174229
申请日期
1927.03.10
申请人
HARRISON CHARLES P
发明人
HARRISON CHARLES P.
分类号
B23B31/28
主分类号
B23B31/28
代理机构
代理人
主权项
地址
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