Acoustic device,申请号US19320623130-传众专利搜索

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发明名称	Acoustic device
摘要
申请公布号	US2007460(A)	申请公布日期	1935.07.09
申请号	US19320623130	申请日期	1932.07.18
申请人	ASSOCIATED ELECTRIC LABORATORIES, INC.	发明人	PYE HAROLD C.
分类号	H04R7/26	主分类号	H04R7/26
代理机构		代理人
主权项
地址

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