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经营范围
发明名称
STEENBOOR.
摘要
申请公布号
NL157380(B)
申请公布日期
1978.07.17
申请号
NL19680016579
申请日期
1968.11.20
申请人
FIRMA FRIEDRICH DUSS, MASCHINENFABRIK, NEUBULACH, BONDSREPUBLIEK DUITSLAND.
发明人
分类号
E21B10/44;E21B17/22;(IPC1-7):E21C1/14;B28D1/14;E02F5/18
主分类号
E21B10/44
代理机构
代理人
主权项
地址
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