Improvements relating to stern-tubes for marine craft,申请号GB19470030492-传众专利搜索

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发明名称	Improvements relating to stern-tubes for marine craft
摘要
申请公布号	GB640396(A)	申请公布日期	1950.07.19
申请号	GB19470030492	申请日期	1947.11.17
申请人	BRITISH TWIN DISC & CLARIFIERS LIMITED	发明人	BECKMAN LEONARD ALFRED
分类号	B63H23/36	主分类号	B63H23/36
代理机构		代理人
主权项
地址

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