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经营范围
发明名称
Speed chuck
摘要
申请公布号
US2571621(A)
申请公布日期
1951.10.16
申请号
US19470737261
申请日期
1947.03.26
申请人
SAUNDERS ENOS P
发明人
SAUNDERS ENOS P.
分类号
B23B31/22
主分类号
B23B31/22
代理机构
代理人
主权项
地址
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