Bone conduction receiver,申请号US19390251039-传众专利搜索

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发明名称	Bone conduction receiver
摘要
申请公布号	US2230500(A)	申请公布日期	1941.02.04
申请号	US19390251039	申请日期	1939.01.14
申请人	E. A. MYERS & SONS	发明人	LYBARGER SAMUEL F.
分类号	H04R11/00	主分类号	H04R11/00
代理机构		代理人
主权项
地址

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