Improvements in or relating to an apparatus for and method of making seamless tubes,申请号GB19470016962-传众专利搜索

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发明名称	Improvements in or relating to an apparatus for and method of making seamless tubes
摘要
申请公布号	GB630744(A)	申请公布日期	1949.10.20
申请号	GB19470016962	申请日期	1947.06.27
申请人	SAM FLOYD KEENER	发明人
分类号	B21J17/00;C21D9/00	主分类号	B21J17/00
代理机构		代理人
主权项
地址

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