Device and method for forming helical tubing,申请号US19650505666-传众专利搜索

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发明名称	Device and method for forming helical tubing
摘要
申请公布号	US3407639(A)	申请公布日期	1968.10.29
申请号	US19650505666	申请日期	1965.10.29
申请人	LOTHAR KEHNE	发明人	KEHNE LOTHAR
分类号	B21C37/12;B21C37/18	主分类号	B21C37/12
代理机构		代理人
主权项
地址

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