Wave signaling method and apparatus,申请号US19330698603-传众专利搜索

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发明名称	Wave signaling method and apparatus
摘要
申请公布号	US2041245(A)	申请公布日期	1936.05.19
申请号	US19330698603	申请日期	1933.11.18
申请人	RADIO RESEARCH LABORATORIES, INC.	发明人	HAFFCKE PHILIP M.
分类号	H04J3/04	主分类号	H04J3/04
代理机构		代理人
主权项
地址

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