Drain trap scraping and cleaning means,申请号US19490107542-传众专利搜索

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发明名称	Drain trap scraping and cleaning means
摘要
申请公布号	US2610696(A)	申请公布日期	1952.09.16
申请号	US19490107542	申请日期	1949.07.29
申请人	MAYBERRY DE ELLA B	发明人	MAYBERRY DE ELLA B.
分类号	E03C1/302	主分类号	E03C1/302
代理机构		代理人
主权项
地址

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