Clean-out plug,申请号US19300496132-传众专利搜索

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发明名称	Clean-out plug
摘要
申请公布号	US1951645(A)	申请公布日期	1934.03.20
申请号	US19300496132	申请日期	1930.11.17
申请人	BOOSEY EDWARD W N	发明人	BOOSEY EDWARD W. N.
分类号	E03F5/04	主分类号	E03F5/04
代理机构		代理人
主权项
地址

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