Improvements in or relating to the manufacture of socketed steel pipes,申请号GB19380034725-传众专利搜索

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发明名称	Improvements in or relating to the manufacture of socketed steel pipes
摘要
申请公布号	GB512212(A)	申请公布日期	1939.08.30
申请号	GB19380034725	申请日期	1938.11.29
申请人	DEUTSCHE EISENWERKE AKTIENGESELLSCHAFT	发明人
分类号	B21C37/29	主分类号	B21C37/29
代理机构		代理人
主权项
地址

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