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发明名称
Раздвижной по диаметру бур для уплотнения почвы
摘要
申请公布号
SU43433(A1)
申请公布日期
1935.06.30
申请号
SU19340150333
申请日期
1934.07.03
申请人
KOLBOVSKIJ I.L.
发明人
KOLBOVSKIJ I.L.
分类号
E21B7/26
主分类号
E21B7/26
代理机构
代理人
主权项
地址
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