Improvements in and relating to lift valves,申请号GB19370035656-传众专利搜索

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发明名称	Improvements in and relating to lift valves
摘要
申请公布号	GB492493(A)	申请公布日期	1938.09.21
申请号	GB19370035656	申请日期	1937.12.23
申请人	BERNHARD KNUPFER	发明人
分类号	F16K3/12	主分类号	F16K3/12
代理机构		代理人
主权项
地址

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