Combined loudspeaker diaphragm and horn,申请号US19560595408-传众专利搜索

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法人/股东/高管

发明名称	Combined loudspeaker diaphragm and horn
摘要
申请公布号	US2852089(A)	申请公布日期	1958.09.16
申请号	US19560595408	申请日期	1956.07.02
申请人	ARTHUR BLUMENFELD	发明人	COHEN ABRAHAM B.;LEVY SIDNEY
分类号	H04R7/12	主分类号	H04R7/12
代理机构		代理人
主权项
地址

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