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经营范围
发明名称
Apparat for å holde to rørstrenger
摘要
申请公布号
NO20001032(A)
申请公布日期
2000.04.14
申请号
NO20000001032
申请日期
2000.03.01
申请人
WEATHERFORD/LAMB INC
发明人
JANSCH, MANFRED
分类号
E21B19/06;E21B19/07;E21B19/10;E21B33/04;E21B33/047;(IPC1-7):E21B19/10
主分类号
E21B19/06
代理机构
代理人
主权项
地址
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