Manufacture of metal tubes and tubular articles,申请号US19370126498-传众专利搜索

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发明名称	Manufacture of metal tubes and tubular articles
摘要
申请公布号	US2140434(A)	申请公布日期	1938.12.13
申请号	US19370126498	申请日期	1937.02.18
申请人	WELLMAN SEAVER ROLLING MILL COMPANY LIMITED	发明人	SMITH SYDNEY
分类号	B21C23/21	主分类号	B21C23/21
代理机构		代理人
主权项
地址

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