Signal receiving and transmitting apparatus,申请号US19460665426-传众专利搜索

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发明名称	Signal receiving and transmitting apparatus
摘要
申请公布号	US2491244(A)	申请公布日期	1949.12.13
申请号	US19460665426	申请日期	1946.04.27
申请人	BECKER HARRY W	发明人	BECKER HARRY W.
分类号	H04B1/40	主分类号	H04B1/40
代理机构		代理人
主权项
地址

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