Attachment for use in connection with telephones,申请号US19310546051-传众专利搜索

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发明名称	Attachment for use in connection with telephones
摘要
申请公布号	US1946617(A)	申请公布日期	1934.02.13
申请号	US19310546051	申请日期	1931.06.22
申请人	ALFRED ELBOZ	发明人	ELBOZ ALFRED
分类号	H04R1/12	主分类号	H04R1/12
代理机构		代理人
主权项
地址

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