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发明名称
STEMPELSTYRT SIKKERHETSVENTIL FOR BROENNER
摘要
申请公布号
NO834125(A)
申请公布日期
1984.08.06
申请号
NO19830004125
申请日期
1983.11.11
申请人
CAMCO INC,
发明人
PRINGLE, RONALD EARL,
分类号
E21B34/00;E21B34/10;(IPC1-7):E21B/
主分类号
E21B34/00
代理机构
代理人
主权项
地址
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