Method of making spiral pipe,申请号US19380233581-传众专利搜索

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发明名称	Method of making spiral pipe
摘要
申请公布号	US2216606(A)	申请公布日期	1940.10.01
申请号	US19380233581	申请日期	1938.10.06
申请人	HALL TAYLOR EDWARD	发明人	TAYLOR EDWARD HALL
分类号	B21C37/12	主分类号	B21C37/12
代理机构		代理人
主权项
地址

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