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发明名称
HYDRAULISCHER STABILISATOR FUER BOHRLOCHWERKZEUG.
摘要
申请公布号
DE3873934(T2)
申请公布日期
1993.04.01
申请号
DE19883873934T
申请日期
1988.02.09
申请人
TRI-STATE OIL TOOL INDUSTRIES INC., BOSSIER CITY, LA., US
发明人
LYNDE, GERALD D., BOSSIER CITY LOUISIANA 71112, US;FOSTER, BENJAMIN E., SHREVEPORT LOUISIANA 71106, US
分类号
E21B17/10;E21B23/04;E21B29/00;(IPC1-7):E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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