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经营范围
发明名称
Enlarged chuck
摘要
申请公布号
US2985460(A)
申请公布日期
1961.05.23
申请号
US19600038603
申请日期
1960.06.24
申请人
THE NATIONAL ACME COMPANY
发明人
BEACOM ROBERT
分类号
B23B31/175
主分类号
B23B31/175
代理机构
代理人
主权项
地址
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