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发明名称
Снаряд для колонкового бурения
摘要
申请公布号
SU137847(A1)
申请公布日期
1960.11.30
申请号
SU19600684436
申请日期
1960.11.02
申请人
发明人
PARFIYANOVICH V.A.
分类号
E21B25/00;E21B49/02;G01N1/08
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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