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经营范围
发明名称
Rollenbohrer fuer drehendes Tiefbohren
摘要
申请公布号
DE681476(C)
申请公布日期
1939.09.23
申请号
DE1936R096794D
申请日期
1936.07.11
申请人
REED ROLLER BIT COMPANY
发明人
分类号
E21B10/10
主分类号
E21B10/10
代理机构
代理人
主权项
地址
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