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发明名称
TUBERIA CONSISTENTE EN TUBOS INDIVIDUALES DE SECCION CUA- DRANGULAR.
摘要
申请公布号
ES227818(Y)
申请公布日期
1977.11.01
申请号
ES19180002278U
申请日期
1975.08.26
申请人
发明人
分类号
F16L9/00;F16L23/14;(IPC1-7):16L/
主分类号
F16L9/00
代理机构
代理人
主权项
地址
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