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发明名称
SWITCH POINT
摘要
申请公布号
SU1435674(A1)
申请公布日期
1988.11.07
申请号
SU19874221551
申请日期
1987.04.07
申请人
VNI PROEKTNO-IZYSKATELSKIJ I TRUBOPROVODNOGO GIDROTRANSPORTA
发明人
GOLOVKOV VASILIJ A,SU
分类号
E01B7/18
主分类号
E01B7/18
代理机构
代理人
主权项
地址
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