Selective mode transducer,申请号US19570665169-传众专利搜索

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发明名称	Selective mode transducer
摘要
申请公布号	US2961618(A)	申请公布日期	1960.11.22
申请号	US19570665169	申请日期	1957.06.12
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	OHM EDWARD A.
分类号	H01P1/161	主分类号	H01P1/161
代理机构		代理人
主权项
地址

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