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发明名称
Врубовая машина
摘要
申请公布号
SU34487(A1)
申请公布日期
1934.02.28
申请号
SU19310099246
申请日期
1931.12.11
申请人
BLYUMENSHTRAUKH D.N.
发明人
BLYUMENSHTRAUKH D.N.
分类号
E21C25/22;E21C25/00
主分类号
E21C25/22
代理机构
代理人
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