An improved device for maintaining a constant liquid level in a tank or the like,申请号GB19550035078-传众专利搜索

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发明名称	An improved device for maintaining a constant liquid level in a tank or the like
摘要
申请公布号	GB771957(A)	申请公布日期	1957.04.10
申请号	GB19550035078	申请日期	1955.12.07
申请人	ERNESTO VALENTE	发明人
分类号	A47J31/56;G05D9/02	主分类号	A47J31/56
代理机构		代理人
主权项
地址

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