Method of extruding long seamless tubing,申请号US19240743146-传众专利搜索

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发明名称	Method of extruding long seamless tubing
摘要
申请公布号	US1802785(A)	申请公布日期	1931.04.28
申请号	US19240743146	申请日期	1924.10.11
申请人	FRITZ SINGER	发明人	SINGER FRITZ
分类号	B21C23/08	主分类号	B21C23/08
代理机构		代理人
主权项
地址

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