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发明名称
Method and apparatus for injecting perforation sealers
摘要
申请公布号
US2976928(A)
申请公布日期
1961.03.28
申请号
US19570664297
申请日期
1957.06.07
申请人
THE WESTERN COMPANY OF NORTH AMERICA
发明人
GILBERT BRUCE
分类号
E21B33/068
主分类号
E21B33/068
代理机构
代理人
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地址
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