Improvements relating to piston valves,申请号GB19280038504-传众专利搜索

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发明名称	Improvements relating to piston valves
摘要
申请公布号	GB325644(A)	申请公布日期	1930.02.27
申请号	GB19280038504	申请日期	1928.12.31
申请人	JOHN MITCHELL;JOHN CECIL GEORGE COSSEY	发明人
分类号	F16K3/24	主分类号	F16K3/24
代理机构		代理人
主权项
地址

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