Telephone dial attachment,申请号GB19510011372-传众专利搜索

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发明名称	Telephone dial attachment
摘要
申请公布号	GB679010(A)	申请公布日期	1952.09.10
申请号	GB19510011372	申请日期	1951.05.15
申请人	RALPH SANDOR	发明人
分类号	H04M1/22	主分类号	H04M1/22
代理机构		代理人
主权项
地址

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