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发明名称
TUBO METALICO DOTADO DE PINOS EXTERNOS RADIAIS E SEU PROCESSO DE FABRICACAO
摘要
申请公布号
BR7708785(A)
申请公布日期
1978.08.29
申请号
BR19770008785
申请日期
1977.12.29
申请人
TROJANI B
发明人
TROJANI B
分类号
B23K9/20;F28F1/12;F28F1/38;(IPC1-7):F28F1/38;B21C37/22
主分类号
B23K9/20
代理机构
代理人
主权项
地址
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