Improvements in or relating to coin-freed watermeters,申请号GB19400006982-传众专利搜索

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发明名称	Improvements in or relating to coin-freed watermeters
摘要
申请公布号	GB542638(A)	申请公布日期	1942.01.21
申请号	GB19400006982	申请日期	1940.04.18
申请人	FREDERIK VAN DER PLAS	发明人
分类号	G04B37/04;G07F15/00	主分类号	G04B37/04
代理机构		代理人
主权项
地址

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