Supporting device for pipe cleaning machines,申请号US19470733810-传众专利搜索

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发明名称	Supporting device for pipe cleaning machines
摘要
申请公布号	US2552808(A)	申请公布日期	1951.05.15
申请号	US19470733810	申请日期	1947.03.11
申请人	O'BRIEN JOHN V	发明人	O'BRIEN JOHN V.
分类号	E03F9/00	主分类号	E03F9/00
代理机构		代理人
主权项
地址

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