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发明名称
Машина для устройства узких траншей
摘要
申请公布号
SU81767(A1)
申请公布日期
1949.11.30
申请号
SU19490395979
申请日期
1949.04.23
申请人
YUNEVICH D.P.
发明人
YUNEVICH D.P.
分类号
E21C49/00
主分类号
E21C49/00
代理机构
代理人
主权项
地址
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