Helicopter,申请号US19460657373-传众专利搜索

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发明名称	Helicopter
摘要
申请公布号	US2481747(A)	申请公布日期	1949.09.13
申请号	US19460657373	申请日期	1946.03.27
申请人	UNITED HELICOPTERS, INC.	发明人	JR. STANLEY HILLER,
分类号	B64C27/54	主分类号	B64C27/54
代理机构		代理人
主权项
地址

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