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发明名称
DROSSELVENTIL, INSBESONDERE FUER OEL- ODER GASBOHRUNGEN.
摘要
申请公布号
AT71442(T)
申请公布日期
1992.01.15
申请号
AT19860730065T
申请日期
1986.04.11
申请人
DYHR, EINAR
发明人
DYHR, EINAR
分类号
E21B34/04;E21B;E21B21/00;E21B21/08;E21B21/10;F16K;F16K7/04;(IPC1-7):F16K7/04
主分类号
E21B34/04
代理机构
代理人
主权项
地址
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