Manufacture of butt and lap welded tubes,申请号US19260140820-传众专利搜索

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发明名称	Manufacture of butt and lap welded tubes
摘要
申请公布号	US1745741(A)	申请公布日期	1930.02.04
申请号	US19260140820	申请日期	1926.10.11
申请人	THE BIRCHFIELD ENGINEERING COMPANY LIMITED	发明人	CHISHOLM DOUGLAS WHIMSTER
分类号	B21C37/08	主分类号	B21C37/08
代理机构		代理人
主权项
地址

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