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发明名称
DEVICE FOR RELEIVING SEAL
摘要
申请公布号
SU976176(A1)
申请公布日期
1982.11.23
申请号
SU19802943531
申请日期
1980.06.19
申请人
VNI PK I GEOFIZICHESKIKH ISSLEDOVANIJ GEOLOGORAZVEDOCHNYKH SKVAZHIN
发明人
KUPOVYKH PETR N,SU;NIKOLAEV NIKOLAJ A,SU
分类号
F16J15/40;(IPC1-7):F16J15/40
主分类号
F16J15/40
代理机构
代理人
主权项
地址
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