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经营范围
发明名称
Automatic chuck jaw
摘要
申请公布号
US2158490(A)
申请公布日期
1939.05.16
申请号
US19380216850
申请日期
1938.06.30
申请人
HAROLD COOKE
发明人
WEBSTER CLARENCE O.
分类号
B23B31/16
主分类号
B23B31/16
代理机构
代理人
主权项
地址
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