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发明名称
Устройство для разработки слабо связанных грунтов
摘要
申请公布号
SU112857(A1)
申请公布日期
1957.11.30
申请号
SU19550575550
申请日期
1955.02.01
申请人
DAVIDYANTS G.P.
发明人
DAVIDYANTS G.P.
分类号
E21C25/60;E21C45/08
主分类号
E21C25/60
代理机构
代理人
主权项
地址
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