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发明名称
MEJORAS INTRODUCIDAS EN LA CONSTRUCCIoN DE PIEZAS DE EMPALME DE TUBERiAS
摘要
申请公布号
ES224587(A2)
申请公布日期
1956.03.01
申请号
ES19870002245
申请日期
1955.10.21
申请人
JANSSEN, HELMUT
发明人
分类号
(IPC1-7):F16
主分类号
(IPC1-7):F16
代理机构
代理人
主权项
地址
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