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发明名称
Method and apparatus for remote control of valves or the like
摘要
申请公布号
US2951536(A)
申请公布日期
1960.09.06
申请号
US19550554754
申请日期
1955.12.22
申请人
GARRETT HENRY U
发明人
GARRETT HENRY U.
分类号
E21B34/10;E21B43/14
主分类号
E21B34/10
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代理人
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