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经营范围
发明名称
Portable drill stand and guide apparatus
摘要
申请公布号
US2832241(A)
申请公布日期
1958.04.29
申请号
US19560618871
申请日期
1956.10.29
申请人
NELSON BROTHERS, INC.
发明人
NELSON WALTER A.
分类号
B23B45/14;B25H1/00
主分类号
B23B45/14
代理机构
代理人
主权项
地址
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