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发明名称
Рудничная клиновая стойка
摘要
申请公布号
SU73479(A1)
申请公布日期
1947.11.30
申请号
SU19470376360
申请日期
1947.06.30
申请人
IVENSEN N.A.
发明人
IVENSEN N.A.
分类号
E21D15/28
主分类号
E21D15/28
代理机构
代理人
主权项
地址
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