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发明名称
Kobling av forspenningstypen
摘要
申请公布号
NO993584(D0)
申请公布日期
1999.07.22
申请号
NO19990003584
申请日期
1999.07.22
申请人
COOPER CAMERON CORP
发明人
BAKER, GERALD
分类号
E21B33/038;E21B34/04;(IPC1-7):F16B
主分类号
E21B33/038
代理机构
代理人
主权项
地址
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