Process of producing cylinders,申请号US19310559333-传众专利搜索

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发明名称	Process of producing cylinders
摘要
申请公布号	US1948437(A)	申请公布日期	1934.02.20
申请号	US19310559333	申请日期	1931.08.25
申请人	HARRISBURG PIPE AND PIPE BENDING COMPANY	发明人	BOWERS JOHN FREDERICK
分类号	B21D51/24;B21K21/00	主分类号	B21D51/24
代理机构		代理人
主权项
地址

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