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发明名称
HYDROSPARK IMPACT DEVICE
摘要
申请公布号
SU475085(A1)
申请公布日期
1983.11.07
申请号
SU19731874916
申请日期
1973.01.24
申请人
ZARZHITSKIJ P.N.,SU
发明人
ZARZHITSKIJ P.N.,SU
分类号
E21B1/28;E21C37/18;(IPC1-7):E21C3/20
主分类号
E21B1/28
代理机构
代理人
主权项
地址
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