Phonograph pickup having elastic drive member,申请号US19480052005-传众专利搜索

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发明名称	Phonograph pickup having elastic drive member
摘要
申请公布号	US2500561(A)	申请公布日期	1950.03.14
申请号	US19480052005	申请日期	1948.09.30
申请人	DICTAPHONE CORPORATION	发明人	NORTON LELAND D.
分类号	H04R1/16	主分类号	H04R1/16
代理机构		代理人
主权项
地址

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