Diaphragm mounting,申请号US19290353091-传众专利搜索

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发明名称	Diaphragm mounting
摘要
申请公布号	US1831235(A)	申请公布日期	1931.11.10
申请号	US19290353091	申请日期	1929.04.06
申请人	RADIO CORPORATION OF AMERICA	发明人	JR. FREDERICK R. FARROW,
分类号	H04R9/04	主分类号	H04R9/04
代理机构		代理人
主权项
地址

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