Loudspeakers,申请号US19570658449-传众专利搜索

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发明名称	Loudspeakers
摘要
申请公布号	US2922851(A)	申请公布日期	1960.01.26
申请号	US19570658449	申请日期	1957.05.10
申请人	GENERAL DYNAMICS CORPORATION	发明人	MANLEY FRED A.
分类号	H04R1/24;H04R23/02	主分类号	H04R1/24
代理机构		代理人
主权项
地址

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