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发明名称
PRODUCTIVE OIL WELL LOCKING HEAD WITH ACTUATEING GATE WALVE SYSTEM
摘要
申请公布号
HU177704(B)
申请公布日期
1981.12.28
申请号
HU1978OA00594
申请日期
1978.05.16
申请人
ORSZAGOS KOEOLAJ ES GAZIPARI TROESZT,HU
发明人
BUDAI,ERNOE,HU;KALLAI,SANDOR,HU;KOVACS,JOZSEF,HU;KURUCZ,ISTVAN,HU;PATAKI,JOZSEF,HU
分类号
E21B33/03;F16K3/00;(IPC1-7):E21B33/03
主分类号
E21B33/03
代理机构
代理人
主权项
地址
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