Improvements in rudders,申请号GB19440002976-传众专利搜索

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发明名称	Improvements in rudders
摘要
申请公布号	GB560922(A)	申请公布日期	1944.04.26
申请号	GB19440002976	申请日期	1942.10.21
申请人	JOHN LIVINGSTON	发明人
分类号	B63H25/38	主分类号	B63H25/38
代理机构		代理人
主权项
地址

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