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发明名称
DIT PROP SETTING DEVICE
摘要
申请公布号
SU570716(A1)
申请公布日期
1977.08.30
申请号
SU19721756385
申请日期
1972.03.13
申请人
VNI PK I DOBYCHI UGLYA GIDRAVLICHESKIM SPOSOBOM
发明人
ZAVERTAJLO VASILIJ F,SU
分类号
E21D20/02;(IPC1-7):E21D20/02
主分类号
E21D20/02
代理机构
代理人
主权项
地址
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