ELECTROMAGNETIC PHONOGRAPH PICKUP CARTRIDGES WITH ZERO BALANCED ARMATURE FLUX,申请号USD3441688-传众专利搜索

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发明名称	ELECTROMAGNETIC PHONOGRAPH PICKUP CARTRIDGES WITH ZERO BALANCED ARMATURE FLUX
摘要
申请公布号	US3441688(A)	申请公布日期	1969.04.29
申请号	USD3441688	申请日期	1966.04.18
申请人	EMPIRE SCIENTIFIC CORP.	发明人	HARRY B. SHAPER
分类号	H04R11/12;(IPC1-7):H04R1/16;H04R9/12;H04R11/08	主分类号	H04R11/12
代理机构		代理人
主权项
地址

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