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发明名称
Drilling apparatus
摘要
申请公布号
US2302793(A)
申请公布日期
1942.11.24
申请号
US19410422770
申请日期
1941.12.12
申请人
MUELLER CO.
发明人
MUELLER FRANK H.;BOWAN WALTER J.
分类号
B23B41/08;F16L41/06
主分类号
B23B41/08
代理机构
代理人
主权项
地址
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