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发明名称
Brennkraftbetriebene Bohrvorrichtung
摘要
申请公布号
DE3935252(C2)
申请公布日期
1996.08.14
申请号
DE19893935252
申请日期
1989.10.23
申请人
FLETCHER, GERALD L., JAKARTA, ID;FLETCHER, GREGORY T., JAKARTA, ID
发明人
FLETCHER, GERALD L., JAKARTA, ID;FLETCHER, GREGORY T., JAKARTA, ID
分类号
E21B1/00;E21B4/06;E21B4/14;E21B4/16;E21B7/00;E21B10/36;E21B21/16;(IPC1-7):E21B4/16
主分类号
E21B1/00
代理机构
代理人
主权项
地址
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