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发明名称
MINA PER BLOCCARE LE FUORIUSCITE DEL PETROLIO
摘要
申请公布号
IT7847782(D0)
申请公布日期
1978.01.25
申请号
IT19780047782
申请日期
1978.01.25
申请人
CESARINI PIETRO
发明人
分类号
E21D;(IPC1-7):E21D/
主分类号
E21D
代理机构
代理人
主权项
地址
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