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发明名称
APPARATUS FOR CEMENTING CASINGS
摘要
申请公布号
SU1425303(A1)
申请公布日期
1988.09.23
申请号
SU19864088607
申请日期
1986.07.07
申请人
POLTAVSKOE OTDEL UK NI GEOLOGORAZVEDOCHNOGO INSTITUTA
发明人
KRYKH BORISLAV V,SU
分类号
E21B33/14
主分类号
E21B33/14
代理机构
代理人
主权项
地址
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