Improvements in or relating to lifting rotors flying machines,申请号GB19540031888-传众专利搜索

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发明名称	Improvements in or relating to lifting rotors flying machines
摘要
申请公布号	GB780754(A)	申请公布日期	1957.08.07
申请号	GB19540031888	申请日期	1954.11.04
申请人	WILLIAM DOUGLAS COOKE	发明人
分类号	B64D1/14	主分类号	B64D1/14
代理机构		代理人
主权项
地址

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