Helicopter,申请号US19550509526-传众专利搜索

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发明名称	Helicopter
摘要
申请公布号	US2938679(A)	申请公布日期	1960.05.31
申请号	US19550509526	申请日期	1955.05.19
申请人	TOMMY E. WALKER	发明人	JR. JAMES E. WALKER,
分类号	B64C27/12	主分类号	B64C27/12
代理机构		代理人
主权项
地址

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