TUBO COM ELEMENTOS AUMENTADORES DE SUPERFICIE PRESOS SOBRE SEU LADO INTERNO;E PROCESSO E APARELHO PARA FABRICAR O MESMO,申请号BR19787807084-传众专利搜索

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发明名称	TUBO COM ELEMENTOS AUMENTADORES DE SUPERFICIE PRESOS SOBRE SEU LADO INTERNO;E PROCESSO E APARELHO PARA FABRICAR O MESMO
摘要
申请公布号	BR7807084(A)	申请公布日期	1979.05.08
申请号	BR19787807084	申请日期	1978.10.26
申请人	SVENSKA MASKINVERKEN AB	发明人	SJOHOLM B
分类号	B21C37/22;B23K9/20;F28F;F28F1/40;(IPC1-7):B21C37/22	主分类号	B21C37/22
代理机构		代理人
主权项
地址

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