Antiflood device for floor drains,申请号US19490083663-传众专利搜索

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发明名称	Antiflood device for floor drains
摘要
申请公布号	US2517195(A)	申请公布日期	1950.08.01
申请号	US19490083663	申请日期	1949.03.26
申请人	BASEMENT SENTINEL COMPANY	发明人	GASPAR WILLIAM P.
分类号	E03F5/042	主分类号	E03F5/042
代理机构		代理人
主权项
地址

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