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发明名称
APPARECCHIATURA IDRAULICA DI SICUREZZA PER VALVOLE REGOLATRICI DI PRESSIONE PER L'ALIMENTAZIONE DI DISPOSITIVI ANULARI DI PREVENZIONE DI ERUZIONE DI POZZI
摘要
申请公布号
IT1178710(B)
申请公布日期
1987.09.16
申请号
IT19840023898
申请日期
1984.12.05
申请人
ORTOIL SPA
发明人
SACCHI BRUNO
分类号
E21B33/06;E21B34/16;G05D16/18;(IPC1-7):E21B/
主分类号
E21B33/06
代理机构
代理人
主权项
地址
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Extrudierter Gegenstand
