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发明名称
ROTARY BLOW-PREVENTER
摘要
申请公布号
SU712489(A1)
申请公布日期
1980.01.30
申请号
SU19782647082
申请日期
1978.07.19
申请人
KRASNODARSKIJ G NAUCHNO- I PI NEFTYANOJ PROMYSHLENNOSTI
发明人
SVIRIDOV LEV A,SU
分类号
E21B33/06;(IPC1-7):E21B33/06
主分类号
E21B33/06
代理机构
代理人
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