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发明名称
Blow-out preventer
摘要
申请公布号
US2177164(A)
申请公布日期
1939.10.24
申请号
US19350030034
申请日期
1935.07.05
申请人
BAASH LAWRENCE F
发明人
BAASH LAWRENCE F.
分类号
E21B33/06
主分类号
E21B33/06
代理机构
代理人
主权项
地址
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