Improvements in and relating to propellers for parachutes and helicopters,申请号GB19470026966-传众专利搜索

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发明名称	Improvements in and relating to propellers for parachutes and helicopters
摘要
申请公布号	GB645271(A)	申请公布日期	1950.10.25
申请号	GB19470026966	申请日期	1947.10.07
申请人	VITTORIO ISACCO	发明人
分类号	B64C27/46	主分类号	B64C27/46
代理机构		代理人
主权项
地址

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