Improvements relating to valves,申请号GB19300024881-传众专利搜索

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发明名称	Improvements relating to valves
摘要
申请公布号	GB348975(A)	申请公布日期	1931.05.21
申请号	GB19300024881	申请日期	1930.08.20
申请人	ROBERT WILLIAM LEACH;WILLIAM HENRY BATEMAN	发明人
分类号	F16K3/36	主分类号	F16K3/36
代理机构		代理人
主权项
地址

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