An improvement in or relating to valves for gas meters of the dry type,申请号GB19400017423-传众专利搜索

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发明名称	An improvement in or relating to valves for gas meters of the dry type
摘要
申请公布号	GB545636(A)	申请公布日期	1942.06.05
申请号	GB19400017423	申请日期	1940.12.07
申请人	HARRY JOHNSTON	发明人
分类号	G01F3/22;G01F15/00	主分类号	G01F3/22
代理机构		代理人
主权项
地址

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