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发明名称
Valve
摘要
申请公布号
US3379405(A)
申请公布日期
1968.04.23
申请号
US19660528021
申请日期
1966.01.03
申请人
ACF INDUSTRIES, INCORPORATED
发明人
NATHO PAUL J.
分类号
E21B33/06;E21B34/04;F16K31/122
主分类号
E21B33/06
代理机构
代理人
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