Improvements in or relating to variable-pitch airscrews,申请号GB19400014409-传众专利搜索

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发明名称	Improvements in or relating to variable-pitch airscrews
摘要
申请公布号	GB543991(A)	申请公布日期	1942.03.23
申请号	GB19400014409	申请日期	1940.09.20
申请人	LEONARD GASKELL FAIRHURST;HERBERT NEWPORT	发明人
分类号	B64C11/42	主分类号	B64C11/42
代理机构		代理人
主权项
地址

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