Improvements in airscrews,申请号GB19340022420-传众专利搜索

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发明名称	Improvements in airscrews
摘要
申请公布号	GB443566(A)	申请公布日期	1936.03.02
申请号	GB19340022420	申请日期	1934.08.01
申请人	KENNETH CHESTERTON JOHNSON	发明人
分类号	B64C11/16	主分类号	B64C11/16
代理机构		代理人
主权项
地址

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