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发明名称
ADJUSTABLE DRILLING APPARATUS
摘要
申请公布号
US3622248(A)
申请公布日期
1971.11.23
申请号
USD3622248
申请日期
1969.08.11
申请人
DAVID B. SCOTT
发明人
DAVID B. SCOTT
分类号
B23B51/00;(IPC1-7):B23B51/00
主分类号
B23B51/00
代理机构
代理人
主权项
地址
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