Improvements in or relating to screw propellers,申请号GB19300025688-传众专利搜索

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发明名称	Improvements in or relating to screw propellers
摘要
申请公布号	GB364137(A)	申请公布日期	1931.12.28
申请号	GB19300025688	申请日期	1930.08.28
申请人	ALUMINIUM LIMITED	发明人
分类号	B21H7/16	主分类号	B21H7/16
代理机构		代理人
主权项
地址

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