Thkee-phase wired radio receiving circuits,申请号US19260103339-传众专利搜索

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发明名称	Thkee-phase wired radio receiving circuits
摘要
申请公布号	US1800820(A)	申请公布日期	1931.04.14
申请号	US19260103339	申请日期	1926.04.20
申请人	FEDERAL TELEGRAPH COMPANY	发明人	JR. ROBERT D. DUNCAN,
分类号	H04B3/54	主分类号	H04B3/54
代理机构		代理人
主权项
地址

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