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发明名称
VALVE APPARATUS
摘要
申请公布号
GB8324209(D0)
申请公布日期
1983.10.12
申请号
GB19830024209
申请日期
1983.09.09
申请人
KOOMEY BLOWOUT PREVENTERS INC
发明人
分类号
E21B33/06;(IPC1-7):E21B33/06
主分类号
E21B33/06
代理机构
代理人
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地址
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