Helicopter,申请号US19320614007-传众专利搜索

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发明名称	Helicopter
摘要
申请公布号	US1906143(A)	申请公布日期	1933.04.25
申请号	US19320614007	申请日期	1932.05.27
申请人	EVANS MERWIN W	发明人	EVANS MERWIN W.
分类号	B64C27/10	主分类号	B64C27/10
代理机构		代理人
主权项
地址

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