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发明名称
APERFEICOAMENTO EM VALVULA PARA PIA
摘要
申请公布号
BR8303359(A)
申请公布日期
1985.02.12
申请号
BR19830003359
申请日期
1983.06.21
申请人
METALURGICA NORPI LTDA.
发明人
RUBENS CAREON
分类号
E03C1/22;(IPC1-7):E03C1/22
主分类号
E03C1/22
代理机构
代理人
主权项
地址
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