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发明名称
PENYEKAT BAWAH SUMUR
摘要
申请公布号
ID23213(A)
申请公布日期
2000.03.30
申请号
ID19980001044
申请日期
1998.07.24
申请人
UNION OIL COMPANY OF CALIFORNIA
发明人
MICHAEL A. CAIN
分类号
E21D11/00;(IPC1-7):E21D11/00
主分类号
E21D11/00
代理机构
代理人
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地址
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