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发明名称
Устройство для пробивания дыр в шейке рельса
摘要
申请公布号
SU65504(A1)
申请公布日期
1944.11.30
申请号
SU19440004857
申请日期
1944.11.05
申请人
OSTAPENKO D.I.
发明人
OSTAPENKO D.I.
分类号
E01B31/06
主分类号
E01B31/06
代理机构
代理人
主权项
地址
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