Improvements relating to internal combustion engine valves,申请号GB19400004211-传众专利搜索

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发明名称	Improvements relating to internal combustion engine valves
摘要
申请公布号	GB535205(A)	申请公布日期	1941.04.01
申请号	GB19400004211	申请日期	1940.03.06
申请人	MELL ALLISON BOLTON	发明人
分类号	F01L1/28	主分类号	F01L1/28
代理机构		代理人
主权项
地址

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