Valved floor drain,申请号US19390295874-传众专利搜索

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发明名称	Valved floor drain
摘要
申请公布号	US2246390(A)	申请公布日期	1941.06.17
申请号	US19390295874	申请日期	1939.09.21
申请人	HARRY SMITH ZACHARY	发明人	SMITH ZACHARY HARRY
分类号	E03C1/262	主分类号	E03C1/262
代理机构		代理人
主权项
地址

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