Improvements relating to butterfly valves,申请号GB19590011665-传众专利搜索

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发明名称	Improvements relating to butterfly valves
摘要
申请公布号	GB952445(A)	申请公布日期	1964.03.18
申请号	GB19590011665	申请日期	1959.04.07
申请人	JAN RICHARD DEWIDELS	发明人
分类号	F16K1/226	主分类号	F16K1/226
代理机构		代理人
主权项
地址

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