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发明名称
Selective firing apparatus
摘要
申请公布号
US3380540(A)
申请公布日期
1968.04.30
申请号
US19660548450
申请日期
1966.05.09
申请人
SCHLUMBERGER TECHNOLOGY CORPORATION
发明人
FIELDS ROGER Q.
分类号
E21B43/1185;F42D1/055
主分类号
E21B43/1185
代理机构
代理人
主权项
地址
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