Retainer device for telephone sets,申请号US19320607561-传众专利搜索

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发明名称	Retainer device for telephone sets
摘要
申请公布号	US1932109(A)	申请公布日期	1933.10.24
申请号	US19320607561	申请日期	1932.04.26
申请人	JUDSON OWEN R	发明人	JUDSON OWEN R.
分类号	H04M1/11	主分类号	H04M1/11
代理机构		代理人
主权项
地址

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