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发明名称
WELL HEAD SEALING-OFF ARRANGEMENT
摘要
申请公布号
SU752011(A1)
申请公布日期
1980.07.30
申请号
SU19782615205
申请日期
1978.05.12
申请人
G GEOFIZICHESKIJ TREST TATNEFTEGEOFIZIKA MINISTERSTVA NEFTYANOJ PROMYSHLENNOSTI
发明人
VALITOV RAIS G,SU;TEREGULOV OLEG A,SU
分类号
E21D1/00;(IPC1-7):E21D1/00
主分类号
E21D1/00
代理机构
代理人
主权项
地址
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