Mehrwandiges Metallrohr, insbesondere aus mit zugfesten (Eisen-) Schichten abwechselnden korrosionsfesten Schichten,申请号DE1928B140069D-传众专利搜索

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发明名称	Mehrwandiges Metallrohr, insbesondere aus mit zugfesten (Eisen-) Schichten abwechselnden korrosionsfesten Schichten
摘要
申请公布号	DE518709(C)	申请公布日期	1931.02.19
申请号	DE1928B140069D	申请日期	1928.11.02
申请人	BUNDY TUBING COMPANY	发明人
分类号	B21C37/09;F16L9/16	主分类号	B21C37/09
代理机构		代理人
主权项
地址

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