Radio communication system,申请号US19290339329-传众专利搜索

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发明名称	Radio communication system
摘要
申请公布号	US1816579(A)	申请公布日期	1931.07.28
申请号	US19290339329	申请日期	1929.02.12
申请人	HAMMOND JR JOHN HAYS	发明人	JR. JOHN HAYS HAMMOND,
分类号	H04B7/12	主分类号	H04B7/12
代理机构		代理人
主权项
地址

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