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发明名称
Selective firing system
摘要
申请公布号
US3246707(A)
申请公布日期
1966.04.19
申请号
US19640345274
申请日期
1964.02.17
申请人
SCHLUMBERGER WELL SURVEYING CORPORATION
发明人
BELL WILLIAM T.
分类号
E21B43/117;E21B43/1185;F42D1/05;F42D1/055
主分类号
E21B43/117
代理机构
代理人
主权项
地址
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