Precision radio dial,申请号US19370151621-传众专利搜索

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发明名称	Precision radio dial
摘要
申请公布号	US2143665(A)	申请公布日期	1939.01.10
申请号	US19370151621	申请日期	1937.07.02
申请人	PAN AMERICAN AIRWAYS CORPORATION	发明人	SULLINGER FERRIS W.
分类号	H03J1/14	主分类号	H03J1/14
代理机构		代理人
主权项
地址

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