IMPROVEMENTS IN OR RELATING TO TELEPHONE OPERATORS DESK SETS,申请号GB19690061407-传众专利搜索

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发明名称	IMPROVEMENTS IN OR RELATING TO TELEPHONE OPERATORS DESK SETS
摘要
申请公布号	GB1259670(A)	申请公布日期	1972.01.12
申请号	GB19690061407	申请日期	1969.12.17
申请人	SIEMENS AKTIENGESELLSCHAFT	发明人
分类号	H04M3/58;H04M3/60;H04M3/62	主分类号	H04M3/58
代理机构		代理人
主权项
地址

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